View source for Weapons:Glock

{{Short description|Series of pistols}}
{{About|the semi-automatic pistol|other uses}}
{{Use dmy dates|date=October 2021}}
{{Infobox weapon
| name               = Glock
| image              = Glock 17 (6825676904) без фона.jpg
| image_size         = 300
| caption            = A first-generation Glock 17 adopted by the [[Norwegian Armed Forces]] under the P80 designation.
| origin             = [[Austria]]
| type               = {{plainlist|
*[[Semi-automatic pistol]]
*[[Machine pistol]] (Glock 18)}}
| is_ranged          = yes
| service            = 1982–present
| used_by            = See ''[[#Users|Users]]''
| wars               = [[Kurdish-Turkish conflict (1978-present)]]<ref>{{cite news |last1=Şafak |first1=Yeni |title=PKK'ya ait silahlar ele geçirildi |url=https://www.yenisafak.com/gundem/pkkya-ait-silahlar-ele-gecirildi-2540663 |access-date=24 June 2023 |work=Yeni Şafak |language=tr-TR}}</ref><br>[[War in Afghanistan (2001-2021)]]<br>[[Iraq War]]<br>[[Syrian Civil War]]<br>[[War in Iraq (2013-2017)]]<br>[[2022 Russian invasion of Ukraine]]<ref>{{cite web|url=https://www.thedrive.com/the-war-zone/ukraine-situation-report-a-peak-into-prigozhins-bizarre-pad|title=Ukraine Situation Report: A Peek Into Prigozhin's Bizarre Pad|date=July 5, 2023|author=Howard Altman|archiveurl=https://web.archive.org/web/20230708031739/https://www.thedrive.com/the-war-zone/ukraine-situation-report-a-peak-into-prigozhins-bizarre-pad|archive-date=July 8, 2023|quote=According to Fontanka, two Saiga carbines, an Austrian Stey carbine, an Arka semi-automatic rifle, and several other rifles and pistols were among the items returned to Prighozin. The most revered of all those weapons, however, was a Glock pistol Prigozhin was awarded by Russian Defense Minister Sergei Shoigu, according to Fontanka.}}</ref><ref>{{cite web|url=https://www.yahoo.com/entertainment/ukrainian-kraken-regiment-show-small-105355761.html|title=Ukrainian Kraken Regiment show their small arms and revolver grenade launchers|date=March 5, 2023|work=Ukrainska Pravda|archiveurl=https://web.archive.org/web/20230308015911/https://www.yahoo.com/entertainment/ukrainian-kraken-regiment-show-small-105355761.html|archive-date=March 8, 2023|quote=Kraken's arsenal includes Austrian Glock pistols, Swiss B&T submachine guns, American M4A1 assault rifles, DD MK18, Belgian Scar rifles, and lightweight multi-shot RBG6 hand grenade launchers made in Croatia.}}</ref><br>[[2024 conflict in Ecuador]]<ref>{{cite tweet|user=war_noir||number=1744852566477783178|title=#Ecuador 🇪🇨: A recent footage shows armed members of the criminal groups shooting at a Police car during the recent conflicts. The perpetrators are armed with various pistols including a Glock pistol (possibly Glock 19 Gen 3) with extended magazine}}</ref>
| designer           = [[Gaston Glock]]
| design_date        = 1979–1982
| manufacturer       = [[Glock Ges.m.b.H.]]
| unit_cost          = 
| production_date    = 1982–present
| number             = 20,000,000 as of 2020<ref>{{Cite web |url=https://www.all4shooters.com/en/shooting/accessories/new-glock-watch-chrono-the-40th-anniversary-of-the-glock-pistol/ |title=New GLOCK Watch Chrono: it's time to celebrate the 40th anniversary of the GLOCK pistol |first=Piergiorgio |last=Molinari |date=14 September 2021 |website=All4shooters |language=en}}</ref>
| variants           = See ''[[#Variants|Variants]]''
| spec_label         = 
| weight             = 
| length             = 
| part_length        = 
| width              = 
| height             = 
| cartridge          = {{plainlist|
*[[9×19mm Parabellum]]
*[[10mm Auto]]
*[[.22 LR]]
*[[.357 SIG]]
*[[.380 ACP]]
*[[.40 S&W]]
*[[.45 ACP]]
*[[.45 GAP]]
}}
| action             = [[Recoil operation#Short recoil operation|Short recoil]], locked breech, tilting barrel ([[Blowback (arms)|straight blowback]] for Glock 25, 28 and 44)
| rate               = 1,100–1,200 rounds/min (Glock 18)
| velocity           = {{convert|375|m/s|0|abbr=on}} (Glock 17, 17C, 18, 18C)<ref>{{Cite book |last=Dockery |first=Kevin |author-link=Kevin Dockery (author) |url=https://books.google.com/books?id=8RxJxY7wQn0C&pg=PA188 |title=Future Weapons |page=188 |location=New York |publisher=Penguin |year=2007 |isbn=978-0-425-21750-4 |access-date=1 January 2016 |archive-url=https://web.archive.org/web/20160122133731/https://books.google.com/books?id=8RxJxY7wQn0C&pg=PA188 |archive-date=22 January 2016 |url-status=dead}}</ref>
| range              = {{convert|50|m|yd|0|abbr=on}} (Glock 17, 17C, 18, 18C)<ref>{{Cite web |url=http://www.tuffsteel.com/Glock_Pages/glock18.htm |title=Glock 18 |year=2004 |website=Tuffsteel Manufacturing |access-date=27 November 2010 |url-status=dead |archive-url=https://web.archive.org/web/20101127154842/http://www.tuffsteel.com/Glock_Pages/glock18.htm |archive-date=27 November 2010}}{{Verify source|date=December 2010}}<!-- Linked page cites Wikipedia as the source --></ref><ref>{{Cite web |url=http://www.enemyforces.net/firearms/glock17.htm |title=Glock 17 |website=EnemyForces.net |access-date=26 December 2010 |url-status=live |archive-url=https://web.archive.org/web/20101216195743/http://enemyforces.net/firearms/glock17.htm |archive-date=16 December 2010}}{{Verify source|date=December 2010}}<!-- Linked page cites Wikipedia as the source --></ref>
| max_range          = 
| feed               = 6-, 10-, 13-, 15-, 17-, 19-, 24-, 31-, 33-, or 40-round<ref>{{Cite web |url=https://www.etsgroup.us/ETS-40-round-9mm-mag-fits-Glock-17-18-19-26-p/glk-18-40.htm |title=ETS 40 round (9mm) mag, fits Glock 17, 18, 19, 26, 34 |website=Elite Tactical Systems Group}}</ref> [[detachable box magazine]], or 50- or 100-round<ref>{{Cite web |url=https://betaco.com/beta-mag-magazine-9mm-glock-clear/ |title=BETA MAG Magazine 9MM Glock Clear |website=The Beta Company}}</ref> detachable [[drum magazine]]
| sights             = 
}}

'''Glock''' ({{IPA-de|ˈglɔk|lang}}; stylized as '''GLOCK''') is a brand of [[polymer]]-[[Receiver (firearms)|framed]], [[Recoil operation#Short recoil operation|short recoil]]-operated, locked-breech [[semi-automatic pistol]]s designed and produced by Austrian manufacturer [[Glock Ges.m.b.H.|Glock Ges.m.b.H]].

The firearm entered [[Austrian Armed Forces|Austrian military]] and [[Federal Police (Austria)|police]] service by 1982 after becoming the top performer in reliability and safety tests.{{sfnp|Kasler|1992|p=2}}

Glock pistols have become the company's most profitable line of products, and have been supplied to national armed forces, security agencies, and police forces in at least 48 countries.<ref name="Sweeney 2008">{{Cite book |last=Sweeney |first=Patrick |title=The Gun Digest Book of the Glock |publisher=Krause Publications |year=2008 |isbn=978-0-89689-642-0 |edition=2nd |location=Iola, WI}}{{page needed|date=October 2019}}</ref> Glocks are also popular firearms among civilians for recreational and [[competition shooting]], home- and self-defense, both in [[concealed carry|concealed]] or [[open carry]].<ref>{{Cite book |last=Barrett |first=Paul |url=https://www.worldcat.org/oclc/793579035 |title=Glock : The Rise of America's Gun |date=2012 |isbn=978-0-307-71995-9 |edition=1st paperback |location=New York |oclc=793579035}}</ref>
{{TOC limit}}

== History ==
The company's founder and head engineer, [[Gaston Glock]] (1929–2023), had no experience with firearms design or manufacture at the time his first pistol, the Glock{{nbsp}}17, was being [[prototype]]d. Glock had extensive experience in advanced synthetic [[polymer]]s, which was instrumental in the company's design of the first commercially successful line of pistols with a polymer frame.<ref>{{Cite news |url=https://www.wsj.com/articles/SB10001424052970204257504577149913689465528 |title=Pistol-Packing By the Millions |last=Horan |first=Daniel |date=17 January 2012 |work=[[The Wall Street Journal]] |access-date=3 August 2017 |url-status=live |archive-url=https://web.archive.org/web/20170709195217/https://www.wsj.com/articles/SB10001424052970204257504577149913689465528 |archive-date=9 July 2017}}</ref> Glock introduced [[ferritic nitrocarburizing]] into the firearms industry as an anticorrosion surface treatment for metal gun parts.<ref name="MetalTreatments">{{Cite web |url=http://firearmshistory.blogspot.com/2010/08/metal-treatments-ferritic.html |title=Metal Treatments: Ferritic Nitrocarburizing/Melonite/Tenifer |date=7 August 2010 |website=Firearms History, Technology & Development |access-date=25 December 2014 |url-status=live |archive-url=https://web.archive.org/web/20141006092110/http://firearmshistory.blogspot.com/2010/08/metal-treatments-ferritic.html |archive-date=6 October 2014}}</ref>

=== Development ===
In 1980, the [[Austrian Armed Forces]] announced that it would seek tenders for a new, modern duty pistol to replace their [[World War II]]–era [[Walther P38]] handguns.{{sfnp|Kasler|1992|p=2}} The Federal Ministry of Defence of Austria formulated a list of 17 criteria for the new generation service pistol, including requirements that it would be [[Semi-automatic firearm|self loading]]; fire the [[NATO]]-standard [[9×19mm Parabellum]] round; the magazines were not to require any means of assistance for loading; be secure against [[Unintentional discharge (firearms)|accidental discharge]] from shock, strike, and drop from a height of {{convert|2|m|abbr=on}} onto a steel plate.{{sfnp|Kasler|1992|p=2}} After firing 15,000 rounds of standard ammunition, the pistol was to be inspected for wear. The pistol was to then be used to [[NATO EPVAT testing#Proofing|fire]] an [[Overpressure ammunition|overpressure]] test cartridge generating {{convert|5000|bar|MPa psi|abbr=on}}.{{Dubious|Overpressure|reason=Our table, which agrees with the source, says 25% overpressure, which is 3120, not 5000 bar.|date=August 2018}} The normal maximum operating pressure (P<sub>max</sub>) for the 9&nbsp;mm NATO is {{convert|2520|bar|MPa psi|abbr=on}}.<ref>{{cite web |url=http://www.dstan.mod.uk/data/05/101/01000100.pdf |title=Defence Standard 05–101 Part 1: Proof of Ordnance, Munitions, Armour and Explosives |date=20 May 2005 |page=13 |website=Ministry of Defence |url-status=dead |archive-url=https://web.archive.org/web/20080406092513/http://www.dstan.mod.uk/data/05/101/01000100.pdf |archive-date=6 April 2008}}</ref>

Glock became aware of the [[Austrian Federal Army|Austrian Army]]'s planned procurement, and in 1982, assembled a team of Europe's leading handgun experts from military, police, and civilian sport-shooting circles to define the most desirable characteristics in a combat pistol.{{sfnp|Kasler|1992|p=2}} Within three months, Glock had developed a working prototype that combined proven mechanisms and traits from previous pistol designs.{{sfnp|Kasler|1992|p=4}} In addition, the plan was to make extensive use of synthetic materials and modern manufacturing technologies, which led to the Glock{{nbsp}}17 becoming a cost-effective candidate.

Several samples of the Glock{{nbsp}}17 (so named because it was the 17th patent procured by the company)<ref>{{Cite book |first1=Josef |last1=Mötz |first2=Joschi |last2=Schuy |name-list-style=amp |title=Die Weiterentwicklung der Selbstladepistole I |trans-title=The further development of the self-loading pistol I |language=de |page=531 |location=[[Laxenburg]] |publisher=Mötz & Schuy |year=2013 |isbn=978-3-9502342-2-0}}</ref> were submitted for assessment trials in early 1982, and after passing all of the exhaustive endurance and abuse tests, the Glock emerged as the winner.<ref>{{Cite book |url=https://books.google.com/books?id=CVfH8nI2IuUC |title=The Gun Digest Book of the Glock |last=Sweeney |first=Patrick |location=Iola, Wisconsin |publisher=Krause Publications |year=2003 |isbn=978-0-873495585}}</ref><ref>{{Cite magazine |url=http://www.remtek.com/arms/glock/model/9/17/index.htm |title=Plastic Perfection: SOF Expert Gives Glock-17 Great Grades |last=Kokalis |first=Peter G. |date=October 1984 |magazine=[[Soldier of Fortune (magazine)|Soldier of Fortune]] |access-date=5 February 2015 |url-status=live |archive-url=https://web.archive.org/web/20150206011419/http://www.remtek.com/arms/glock/model/9/17/index.htm |archive-date=6 February 2015}}</ref><ref>{{Cite book |last=Kinard |first=Jeff |title=Pistol |location=Santa Barbara, CA |publisher=ABC-CLIO |year=2003 |isbn=978-1-85109-475-2}}</ref> According to Friedrich Dechant, former Head of the Austrian Armaments and Defence Technology Agency, the Glock P80 was clearly superior to other handguns in terms of performance, handling, charging capacity and price.<ref>{{Cite web |date=2023-01-13 |title=La società austriaca produttrice delle pistole Glock compie 40 anni |url=https://www.tpi.it/sociale/la-societa-austriaca-produttrice-delle-pistole-glock-compie-40-anni-20230113969740/ |access-date=2023-03-17 |website=TPI |language=it-IT}}</ref>

The handgun was adopted into service with the Austrian military and law enforcement in 1982 as the ''Pistole 80'' (P80),{{sfnp|Woźniak|2001|p=45}} with an initial order for 25,000 guns.{{sfnp|Kasler|1992|p=4}} The Glock{{nbsp}}17 outperformed eight different pistols from five other established manufacturers ([[Heckler & Koch]] of Germany offered their [[Heckler & Koch P7|P7M8]], [[HK P7M13|P7M13]], and [[Heckler & Koch P9S|P9S]], [[SIG Sauer]] of Switzerland bid with their [[SIG P220|P220]] and [[SIG P226|P226]] models, [[Beretta]] of Italy submitted their model [[Beretta 92#History|92SB-F]], [[Fabrique Nationale de Herstal|FN Herstal]] of Belgium proposed an updated variant of the [[Browning Hi-Power]], and the Austrian [[Steyr Mannlicher]] entered the competition with the [[Steyr GB|GB]]).{{sfnp|Kasler|1992|p=6}}

The results of the Austrian trials sparked a wave of interest in Western Europe and overseas, particularly in the United States, where a similar effort to select a service-wide replacement for the [[M1911 pistol|M1911]] had been going on since the late 1970s (known as the [[Joint Service Small Arms Program]]). In late 1983, the [[United States Department of Defense]] inquired about the Glock pistol and received four samples of the Glock{{nbsp}}17 for unofficial evaluation.{{sfnp|Kasler|1992|p=7}} Glock was then invited to participate in the XM9 Personal Defense Pistol Trials, but declined because the DOD specifications would require extensive retooling of production equipment and providing 35 test samples in an unrealistic time frame.{{sfnp|Kasler|1992|p=7}}

In 1985, after joint Norwegian and Swedish trials from 1983 to 1985, the Glock{{nbsp}}17 was accepted into service as the P80 in Norway, and in 1988 as the ''Pistol 88'' in Sweden, where it surpassed all prior NATO durability standards.<ref>{{Cite web |url=https://www.forsvarsmakten.se/sv/information-och-fakta/materiel-och-teknik/vapen/pistol-88/ |title=Vapen: Pistol 88 |website=[[Swedish Armed Forces|Försvarsmakten]] |language=sv}}</ref><ref>{{Cite web |url=http://www.gotavapen.se/gota/artiklar/swedishpistols/swedpist_g.htm |title=Swedish Military Pistols and Revolvers 1863-1988 |first=O. |last=Janson |date=5 August 2012 |website=Göta Association for Weapon History}}</ref>{{sfnp|Kasler|1992|p=7}} As a result, the Glock{{nbsp}}17 became a standard NATO-classified sidearm and was granted a [[NATO Stock Number]] (1005-25-133-6775).{{sfnp|Kasler|1992|p=7}} By 1992, some 350,000{{nbsp}}pistols had been sold in more than 45{{nbsp}}countries, including 250,000 in the United States alone.{{sfnp|Woźniak|2001|p=45}}

Starting in 2013, the [[British Armed Forces]] began replacing the Browning Hi-Power pistol with the Glock{{nbsp}}17{{nbsp}}Gen{{nbsp}}4, due to concerns about weight and the external safety of the Hi-Power.<ref>{{Cite web |url=https://www.theregister.co.uk/2013/01/11/browning_9mm_finally_replaced/ |title=British armed forces get first new pistol since World War II |date=11 January 2013 |website=[[The Register]] |access-date=19 January 2013 |url-status=live |archive-url=https://web.archive.org/web/20130117080615/http://www.theregister.co.uk/2013/01/11/browning_9mm_finally_replaced/ |archive-date=17 January 2013}}</ref> The British preferred the Glock{{nbsp}}17{{nbsp}}Gen{{nbsp}}4 over the [[Beretta Px4 Storm]], [[FN FNP]], [[Heckler & Koch P30]], [[SIG Sauer P226]], [[Smith & Wesson M&P]], and [[Steyr M]]9A1 of which 19 pistols each, all chambered in 9×19{{nbsp}}mm{{nbsp}}Parabellum, were entered in the R9GSP trials.<ref>{{Cite web |url=https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/767517/15464.pdf |title=Letter FOI 2018/15464 |website=Ministry of Defence |date=10 November 2018}}</ref><ref>{{Cite web |url=https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/767518/15730.pdf |title=Letter FOI 2018/15730 |website=Ministry of Defence |date=12 December 2018}}</ref>

The [[French Armed Forces]] (FAF) in 2020 began replacing their [[MAC Mle 1950]] and, to a lesser extent, their [[Beretta 92|PAMAS G1]] pistols with Glock{{nbsp}}17{{nbsp}}Gen{{nbsp}}5 models specifically made for the FAF.<ref name="glock">{{Cite web |url=https://www.janes.com/article/93544/france-awards-pistol-and-sniper-rifle-contracts |title=France awards pistol and sniper rifle contracts |last=Kotlarski |first=Amael |date=7 January 2019 |website=IHS Jane's}}</ref> The French preferred the Glock{{nbsp}}17{{nbsp}}Gen{{nbsp}}5 over the [[HS2000]] and [[CZ P-10 C|CZ P-10]] offerings that also made it to the final selection phase.<ref>{{Cite web |url=http://tre-blog.fr/actualites/psa-glock-17-gen-5-choix-remplacer-mac-50-pamas/ |title=PSA : GLOCK 17 Gen 5, un bon choix pour remplacer MAC 50 et PAMAS? |trans-title=PSA: GLOCK 17 Gen 5, a good choice to replace MAC 50 and PAMAS? |language=fr-FR |date=9 January 2020 |website=TRE - Tactical Response To Efficience |access-date=10 January 2020 |url-status=dead |archive-url=https://web.archive.org/web/20200114050629/http://tre-blog.fr/actualites/psa-glock-17-gen-5-choix-remplacer-mac-50-pamas/ |archive-date=14 January 2020}}</ref>

=== Product evolution ===
Glock has updated its basic design several times throughout its production history.

==== First-generation models ====
[[File:Glock 17 9mmPara 002.jpg|thumb|A "first-generation" Glock{{nbsp}}17 with the slide locked back displaying its vertical barrel tilt]]

The first-generation (Gen 1) Glock pistols are most notably recognized by their smoother "pebble finish" grip and finger groove-less frames. The Gen 1 frame pattern and design was used by Glock from 1982 through 1988 and pre-dates the checkered grip patterns used in the second generation of Glock pistols. The first Glock{{nbsp}}17s imported to the US were serialized with an alpha-numeric (two-letter prefix followed by three numbers) stamped into the slide, barrel, and a small metal plate inserted into the bottom side of the polymer frame. The first documented Glock{{nbsp}}17s (by serial number) imported into the US were from the AF000{{nbsp}}series in January 1986, followed by AH000, AK000, and AL000.<ref>{{Cite book |title=The Complete Glock Reference Guide |location=[[Spokane, WA]] |publisher=Ptooma Productions |year=2006 |edition=3rd |page=240}}</ref> These early Glock{{nbsp}}(Gen 1) pistols (serial number prefix{{nbsp}}AF through AM) were also manufactured with a barrel that had a smaller overall diameter and thinner bore walls, later known as "pencil barrels". These early Glock{{nbsp}}17 "pencil barrel" pistols are considered rare and highly desirable by Glock collectors.{{original research inline|date=March 2021}} The barrels were later redesigned with thicker bore walls and manufacturing continued to evolve and improve the design of Glock pistols.<ref name="Sadowski">{{Cite book |last=Sadowski |first=Robert |title=Book of Glock, A Comprehensive Guide to Americas Most Popular Handgun |publisher=Skyhorse Publishing |year=2018 |page=164}}</ref>

Many of the first-generation Glocks were shipped and sold in the iconic "[[Tupperware]]" style plastic boxes. The earliest Glock boxes had ammunition storage compartments that allowed for 17 rounds of 9mm to be stored with the pistol. This box design was later changed by Glock to meet BATF import requirements and the ammunition storage compartments were removed.<ref name="Sadowski" />

==== Second-generation models ====
[[File:Glock 17 2nd Gen.jpg|thumb|A "second-generation" Glock{{nbsp}}17, identified by the checkering on the front and rear straps of the pistol grip and trigger guard]]

A mid-life upgrade to the Glock pistols involved the addition of checkering on the front strap and trigger guard and checkering and serrations to the back strap. These versions, introduced in 1988, were informally referred to as "second-generation" models. In 1991, an integrated recoil spring assembly replaced the original two-piece recoil spring and tube design. The magazine was slightly modified, changing the floorplate and fitting the follower spring with a resistance insert at its base.{{citation needed|date=October 2019}}

==== Third-generation models ====
[[File:Glock 17C cropped.jpg|thumb|A "third-generation" Glock{{nbsp}}17C, identified by the addition of an extra cross pin above the trigger, finger grooves, a reshaped extractor that serves as a loaded chamber indicator, and an accessory rail]]

In 1998, the frame was further modified with an accessory rail (called the "Universal Glock rail") similar to a [[picatinny rail]] to allow the mounting of [[Laser applications#Laser sight|laser sights]], [[tactical light]]s, and other accessories. Thumb rests on both sides of the frame and finger grooves on the front strap were added. Glock pistols with these upgrades are informally referred to as (early) "third-generation" models. Later third-generation models additionally featured a modified extractor that serves as a [[Safety (firearms)#Loaded chamber indicator|loaded chamber indicator]], and the locking block was enlarged, along with the addition of an extra cross pin to aid the distribution of [[bolt thrust]] forces exerted by the locking block. This cross pin is known as the locking block pin and is located above the trigger pin.{{sfnp|Woźniak|2001|pp=45–50}}

The polymer frames of third-generation models can be black, flat dark earth, or [[olive drab]]. Besides that, non-firing dummy pistols ("P"{{nbsp}}models) and non-firing dummy pistols with resetting triggers ("R"{{nbsp}}models) have a bright red frame, and Simunition-adapted practice pistols ("T"{{nbsp}}models) a bright blue frame for easy identification.<ref>{{Cite web |url=http://lundestudio.com/glocks.html |title=Assorted Glocks (Page 1 of 3) |last=Lunde |first=Ken |date=26 January 2010 |website=Lunde Studio |access-date=25 August 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141014115656/http://lundestudio.com/glocks.html |archive-date=14 October 2014}}</ref>

In 2009, the Glock{{nbsp}}22{{nbsp}}RTF2 (Rough Textured Frame 2) (chambered in [[.40 S&W]]) was introduced. This pistol featured a new checkering texture around the grip and new scalloped (fish gill-shaped) serrations at the rear of the sides of the slide.<ref>{{Cite web |url=http://lundestudio.com/2009SHOTShow/ |title=Ken Lunde's 2009 SHOT Show Photos & Report |last=Lunde |first=Ken |date=30 November 2009 |website=Lunde Studio |access-date=25 August 2014 |url-status=dead |archive-url=https://web.archive.org/web/20130223044536/http://lundestudio.com/2009SHOTShow/ |archive-date=23 February 2013}}</ref><ref>{{Cite magazine |url=http://www.policemag.com/Channel/Weapons/Articles/2009/09/Glock-G22-RTF2-Duty-Pistol.aspx |title=Glock G22 RTF2 Duty Pistol |last=Jacobellis |first=Nick |date=18 September 2009 |magazine=Police |access-date=25 August 2014 |url-status=live |archive-url=https://web.archive.org/web/20141110074714/http://www.policemag.com/channel/weapons/articles/2009/09/glock-g22-rtf2-duty-pistol.aspx |archive-date=10 November 2014}}</ref> Many of the existing models became available in the RTF2{{nbsp}}version, including the 17,<ref>{{cite web | url=https://tacticalgunreview.com/glock-g17-rtf2-9mm/ | title=Glock G17 RTF2 9mm review | date=10 December 2011 }}</ref> 31, 32, 23, 21, and 19. Some of those did not have the fish gills.{{original research inline|date=March 2021}}

==== Fourth-generation models ====
[[File:GLOCK 17 Gen 4 Pistol MOD 45160305.jpg|thumb|A "fourth-generation" Glock{{nbsp}}17, identified by an enlarged and reversible magazine release catch, modified rough texture frame grip checkering, interchangeable backstraps, and a "Gen4"{{nbsp}}rollmark on the slide]]
[[File:Glock 19 Generation 4-removebg.png|thumb|A "fourth-generation" Glock 19]]
At the 2010 [[SHOT Show]], Glock presented the "fourth generation", now dubbed "Gen4" by Glock itself.<ref>{{cite magazine |url=https://www.policemag.com/345280/shot-show-2010-glock-introduces-gen4-pistols |title=SHOT Show 2010: Glock Introduces Gen4 Pistols |magazine=Police |access-date=19 January 2010}}</ref> Updates centered on ergonomics and the recoil spring assembly. The initial two fourth-generation models announced were the full-sized Glock 17 and Glock 22, chambered for the 9×19&nbsp;mm Parabellum and .40 S&W cartridges, respectively. The pistols were displayed with a modified rough-textured frame, grip checkering, and interchangeable backstraps of different sizes. "Gen4" is rollmarked on the slide next to the model number to identify the fourth-generation pistols.

The basic grip size of the fourth-generation Glock pistols is slightly smaller compared to the previous design. A punch is provided to remove the standard trigger housing pin and replace it with the longer cross pin needed to mount the medium or large backstrap that will increase the trigger distance by {{convert|2|mm|in|abbr=on}} or {{convert|4|mm|in|abbr=on}}. With the medium backstrap installed, the grip size is identical to the third-generation pistols. The magazine release catches are enlarged and reversible for left-handed use.<ref>{{Cite web |url=https://highspeedbbs.com/best-glock-airsoft-pistols/ |title=Best Glock Airsoft Pistols |website=High Speed BBs |language=en-US |access-date=23 August 2020}}</ref> To use the exchangeable magazine release feature, fourth-generation Glock magazines have a notch cut on both sides of the magazine body. Earlier versions of the magazines will not lock into the Gen4 pistols if the user has moved the magazine release button to be operated by a left-handed user. Gen4 magazines will work in older models.<ref>{{Cite web |url=http://www.all4shooters.com/en/Shooting/pistols/compare-glock-pistols-gen3-vs-gen4-which-differences/?p=2 |title=Glock pistols Gen3 VS Gen4. What is the difference between the Generations? |last=Cristofani |first=Giuliano |date=10 September 2014 |website=All4Shooters |url-status=live |archive-url=https://web.archive.org/web/20170326050950/https://www.all4shooters.com/en/Shooting/pistols/compare-glock-pistols-gen3-vs-gen4-which-differences/?p=2 |archive-date=26 March 2017}}</ref>

Mechanically, fourth-generation Glock pistols are fitted with a dual recoil spring assembly to help reduce perceived recoil and increase service life expectancy. Earlier subcompact Glock models such as the Glock 26 and Glock 30 have already used a dual recoil spring assembly that was carried over to the fourth-generation versions of those models. The slide and barrel shelf have been resized, and the front portion of the polymer frame has been widened and internally enlarged, to accommodate the dual recoil spring assembly. The trigger mechanism housing has also been modified to fit into the smaller-sized grip space.<ref>{{Cite web |url=http://lundestudio.com/2010SHOTShow/ |title=Ken Lunde's 2010 SHOT Show Photos & Report |date=30 January 2010 |website=Lunde Studio |access-date=29 June 2010 |url-status=dead |archive-url=https://archive.today/20120711182451/http://lundestudio.com/2010SHOTShow/ |archive-date=11 July 2012}}</ref><ref>{{Cite web |url=http://www.gunsholstersandgear.com/2010/01/20/more-gen-4-glock-photos/ |title=More Gen 4 Glock Photos |date=20 January 2010 |website=Guns Holsters and Gear |access-date=29 June 2010 |url-status=live |archive-url=https://web.archive.org/web/20100722050049/http://www.gunsholstersandgear.com/2010/01/20/more-gen-4-glock-photos/ |archive-date=22 July 2010}}</ref><ref>{{Cite web |title=SHOT Show 2010: GLOCK brings pistols into the next generation |url=http://www.policeone.com/police-products/firearms/articles/1992665-SHOT-Show-2010-GLOCK-brings-pistols-into-the-next-generation/ |date=19 January 2010 |website=PoliceOne |access-date=29 June 2010 |url-status=live |archive-url=https://web.archive.org/web/20100403082901/http://www.policeone.com/police-products/firearms/articles/1992665-SHOT-Show-2010-GLOCK-brings-pistols-into-the-next-generation |archive-date=3 April 2010}}</ref><ref>{{Cite web |url=http://www.gunsholstersandgear.com/2010/01/19/gen-4-glock-review-evolution-not-revolution/ |title=Gen 4 Glock Review: Evolution, not Revolution |website=Guns Holsters and Gear |access-date=29 June 2010 |url-status=live |archive-url=https://web.archive.org/web/20100527152040/http://www.gunsholstersandgear.com/2010/01/19/gen-4-glock-review-evolution-not-revolution/ |archive-date=27 May 2010}}</ref><ref>{{Cite web |url=http://www.gunsandammo.com/article/glock-17-gen4 |title=Glock 17 Gen4 |first=Payton |last=Miller |date=9 February 2011 |website=[[Guns & Ammo]] |access-date=19 February 2011 |url-status=dead |archive-url=https://archive.today/20130125051923/http://www.gunsandammo.com/article/glock-17-gen4 |archive-date=25 January 2013}}</ref>

The introduction of fourth-generation Glock pistols continued in July 2010 when the Glock 19 and Glock 23, the reduced size "compact" versions of the Glock 17 and Glock 22, became available for retail.<ref>{{Cite magazine |url=http://www.policemag.com/Channel/Weapons/News/2010/04/29/Glock-19-and-23-Gen4-Will-Arrive-This-Summer.aspx |title=Glock Gen4 G19 and G23 Will Arrive This Summer |date=April 29, 2010 |magazine=Police |access-date=25 December 2014 |url-status=live |archive-url=https://web.archive.org/web/20141225174421/http://www.policemag.com/channel/weapons/news/2010/04/29/glock-19-and-23-gen4-will-arrive-this-summer.aspx |archive-date=25 December 2014}}</ref> In late 2010, Glock continued the introduction of fourth-generation models with the Glock 26 and Glock 27 "subcompact" variants.

In January 2013, more fourth-generation Glock pistols were introduced commercially during the annual SHOT Show, including the Glock 20 Generation 4 along with other fourth-generation Glock models.

====2011 recoil spring assembly exchange program====
In September 2011, Glock announced a recoil spring exchange program in which the manufacturer voluntarily offers to exchange the recoil spring assemblies of its fourth-generation pistols (with the exception of the "subcompact" Glock 26 and Glock 27 models) sold before 22 July 2011 at no cost "to ensure our products perform up to GLOCK's stringent standards", according to the company.<ref>{{Cite web |url=http://www.teamglock.com/customer-service/recoil-spring-exchange |title=Recoil Spring Exchange Program |website=Glock USA |access-date=3 June 2014 |url-status=dead |archive-url=https://web.archive.org/web/20111124080900/http://www.teamglock.com/customer-service/recoil-spring-exchange |archive-date=24 November 2011}}</ref>

==== M series ====
On 29 June 2016, the United States [[Federal Bureau of Investigation]] (FBI) awarded a contract to Glock to provide new 9×19mm Parabellum chambered duty pistols.<ref>{{Cite web |url=https://money.cnn.com/2016/06/30/news/companies/glock-gun-contract-fbi/ |title=Glock wins $85&nbsp;million FBI contract |last=Smith |first=Aaron |date=30 June 2016 |website=CNN Money |access-date=5 October 2016 |url-status=live |archive-url=https://web.archive.org/web/20161005195243/http://money.cnn.com/2016/06/30/news/companies/glock-gun-contract-fbi/ |archive-date=5 October 2016}}</ref> The solicitation specifications deviated from the specifications of Glock fourth-generation models.<ref>{{Cite web |url=https://www.fbo.gov/index?s=opportunity&mode=form&id=3003911f9f7ff35889bf5f46c48ba0ef&tab=core&_cview=1 |title=9mm Luger Pistols / Replacement Parts |website=Federal Business Opportunities |access-date=5 October 2016 |url-status=live |archive-url=https://web.archive.org/web/20170124022426/https://www.fbo.gov/index?s=opportunity&mode=form&id=3003911f9f7ff35889bf5f46c48ba0ef&tab=core&_cview=1 |archive-date=24 January 2017}}</ref>

In August 2016, the [[Indianapolis Metropolitan Police Department|Indianapolis Metro Police Department]] (IMPD) started training with a batch of Glock 17M pistols. The most obvious difference with the Glock third- and fourth-generation models on published images is the omission of finger grooves on the grip.<ref>{{Cite web |url=http://www.thefirearmblog.com/blog/2016/08/16/photos-new-glock-17m-leaked/ |title=Breaking: Photo Of The New FBI Glock 17M Leaked |last=Roberts |first=Patrick |date=16 August 2016 |website=The Firearm Blog |access-date=5 October 2016 |url-status=live |archive-url=https://web.archive.org/web/20161008221626/http://www.thefirearmblog.com/blog/2016/08/16/photos-new-glock-17m-leaked/ |archive-date=8 October 2016}}</ref> In October of that year, the IMPD issued a 17M voluntary recall following failures encountered while dry firing the pistols during training. According to Major Riddle with the IMPD, "Glock is working to correct the problem and we hope to begin issuing the new [17Ms] as soon as December."<ref>{{Cite web |url=http://www.thefirearmblog.com/blog/2016/09/06/glock-17m-recall-update/ |last=Roberts |first=Patrick |date=6 September 2016 |title=Glock 17M Recall Update |website=The Firearm Blog |access-date=5 October 2016 |url-status=live |archive-url=https://web.archive.org/web/20161004005506/http://www.thefirearmblog.com/blog/2016/09/06/glock-17m-recall-update/ |archive-date=4 October 2016}}</ref><ref>{{Cite web |url=http://www.thefirearmblog.com/blog/tag/17m/ |title=17m Archives |website=The Firearm Blog |access-date=5 October 2016 |url-status=live |archive-url=https://web.archive.org/web/20161006100222/http://www.thefirearmblog.com/blog/tag/17m/ |archive-date=6 October 2016}}</ref>

==== Fifth-generation models ====
[[File:Glock 17 FR.jpg|thumb|A "fifth generation" Glock 17 Gen 5 FR used by a French soldier]]

In August 2017, Glock presented the "fifth generation" or "Gen 5". The revisions centered on ergonomics and improving reliability. Many parts of fifth-generation Glock pistols cannot be interchanged with those of the previous generations. The two fifth-generation models announced were the Glock 17 and Glock 19, chambered for the 9×19mm Parabellum. Some conspicuous changes on the fifth-generation models are ambidextrous slide stop levers, [[Diamond-like carbon|DLC]] surface finish for barrel and slide, a barrel featuring a revised style of polygonal rifling (called the "Glock Marksman Barrel" by Glock), a deeper recessed barrel crown, omission of the finger grooves on the grip, a flared magazine well, and a reintroduction of a half-moon-shaped cutout on the bottom front of the grip. The locking block pin located above the trigger pin that was introduced in the third generation is omitted. Many internal parts were less conspicuously revised.<ref>{{Cite web |url=http://www.thefirearmblog.com/blog/2017/08/25/glock-gen5/ |title=OFFICIAL: The New GLOCK Gen5 Has Arrived |date=25 August 2017 |website=The Firearm Blog |access-date=26 August 2017 |url-status=live |archive-url=https://web.archive.org/web/20170826234417/http://www.thefirearmblog.com/blog/2017/08/25/glock-gen5/ |archive-date=26 August 2017}}</ref><ref>{{Cite web |url=http://www.thefirearmblog.com/blog/2017/08/25/gen5-glock-17-19/ |title=TFB First Look: The New Gen5 GLOCK 17 And Gen5 GLOCK 19 |date=25 August 2017 |website=The Firearm Blog |access-date=26 August 2017 |url-status=live |archive-url=https://web.archive.org/web/20170826234620/http://www.thefirearmblog.com/blog/2017/08/25/gen5-glock-17-19/ |archive-date=26 August 2017}}</ref><ref>{{Cite web |url=https://www.ammoland.com/2017/08/glock-gen-5-safe-action-pistols/ |title=GLOCK Gen 5 Safe Action Pistols, First Look at New GLOCK 17 & 19 |date=25 August 2017 |website=AmmoLand |access-date=26 August 2017 |url-status=live |archive-url=https://web.archive.org/web/20170826235744/https://www.ammoland.com/2017/08/glock-gen-5-safe-action-pistols/ |archive-date=26 August 2017}}</ref><ref>{{Cite web |url=http://www.recoilweb.com/inside-the-glock-gen-5-129141.html |title=Here's the Full Reveal of the New Glock Gen5 Pistol |date=24 August 2017 |website=Recoil |access-date=26 August 2017 |url-status=live |archive-url=https://web.archive.org/web/20170826234305/http://www.recoilweb.com/inside-the-glock-gen-5-129141.html |archive-date=26 August 2017}}</ref><ref>{{Cite web |url=http://www.northeastcoating.com/products/dlc-coating |title=High Performance DLC Coatings Give You the Diamond Edge |website=North East Coating Technologies |access-date=3 September 2017 |url-status=live |archive-url=https://web.archive.org/web/20170904011405/http://www.northeastcoating.com/products/dlc-coating |archive-date=4 September 2017}}</ref> "Gen 5" is rollmarked on the slide next to the model number to identify the fifth-generation pistols. The "Gen 5" slide can feature front serrations (FS) to provide an additional tactile traction surface choice. The magazines were also revised for the fifth-generation models: the redesigned magazine floor plates feature a frontward protruding lip to offer grip for manual assisted extraction and the magazine follower<ref>{{cite web |url=https://www.encyclo.co.uk/meaning-of-Magazine_Follower |title=Magazine Follower definition |website=Encyclo.co.uk}}</ref> became orange colored for easier visual identification.

== Design details ==
=== Operating mechanism ===
The Glock 17 is a [[Recoil operation#Short recoil operation|short recoil]]–operated, locked-breech [[semi-automatic pistol]] that uses a modified [[John Browning|Browning]] cam-lock system adapted from the Hi-Power pistol.<ref name="Sweeney2008-p23">{{Cite book |last=Sweeney |first=Patrick |title=The Gun Digest Book of the Glock |date=30 May 2008 |publisher=Gun Digest Books |isbn=978-1-4402-2656-4 |location=Iola, Wisconsin |page=23 |chapter=How the Glock Functions |chapter-url=https://books.google.com/books?id=pAl0vwfI_xAC&pg=PA23}}</ref> The firearm's locking mechanism uses a linkless, vertically tilting barrel with a rectangular breech that locks into the ejection port cut-out in the [[Pistol slide|slide]] [[SIG Sauer System|(the Sig Sauer System)]]. During the recoil stroke, the barrel moves rearward initially locked together with the slide about {{convert|3|mm|in|abbr=on}} until the bullet leaves the barrel and chamber pressure drops to a safe level. A ramped lug extension at the base of the barrel then interacts with a tapered locking block integrated into the frame, forcing the barrel down and unlocking it from the slide. This camming action terminates the barrel's movement while the slide continues back under recoil, extracting and ejecting the spent cartridge casing. The slide's uninterrupted rearward movement and counter-recoil cycle are characteristic of the Browning system.{{sfnp|Kokalis|2001|p=320}}

Glock pistols incorporate a number of features intended to enhance reliability in adverse conditions, such as utilizing advanced metal coatings, "stub" slide guides instead of true frame rails, and an unusual cocking mechanism wherein the trigger is partially responsible for cocking the striker.<ref>{{Cite web |url=https://www.guntweaks.com/glock-17-gen-4-review-and-dirt-test-2019.html |title=Glock 17 Gen 4 Review and Dirt Test |date=2019 |website=GunTweaks.com}}</ref> By relying partially on force from the shooter's trigger finger to cock the striker, a Glock effectively reduces the load on the recoil spring as the slide moves forward into battery, whereas almost all other striker-fired pistols on the market rely fully on the recoil spring to cock the striker.<ref>{{Cite web |last=Armstrong |first=Brian |date=2022-10-14 |title=The Mechanics of a Striker vs. a Hammer-Fired Pistol |url=https://www.crossbreedholsters.com/blog/the-mechanics-of-a-striker-vs-a-hammer-fired-pistol/ |access-date=2023-11-07 |website=CrossBreed Blog |language=en-US}}</ref>

This design gives the recoil spring fewer tasks as the action cycles, helping to ensure that sufficient energy is available to strip a new round from the magazine and achieve full battery even when the breech, chamber, and/or magazine are heavily fouled. For these and other reasons, Glock pistols are commonly considered to be some of the most reliable striker-fired, semi-automatic handguns available, with some independent testing even showing a Glock taking a lead over a [[SIG Sauer P320]]<ref>{{Cite web |url=https://www.guntweaks.com/p320-vs-glock-torture-test-which-is-best-2019.html |title=P320 vs Glock Torture Test |date=2019 |website=GunTweaks.com}}</ref> in a wet/dry reliability test, even though the latter was selected as the winner of the U.S. Army's [[XM17 Modular Handgun System competition|MHS]] competition.

=== Features ===
[[File:Glock 30-JH02.jpg|thumb|A subcompact Glock 30 field stripped to its main groups with a [[.45 ACP]] round]]

The slide features a spring-loaded claw [[Extractor (firearms)|extractor]], and the stamped [[sheet metal]] ejector is pinned to the trigger mechanism housing.<ref>''Glock Armorer Manual'', 2012, p.52.</ref> Pistols after 2002 have a reshaped extractor that serves as a loaded chamber indicator. When a cartridge is present in the chamber, a tactile metal edge protrudes slightly out immediately behind the ejection port on the right side of the slide.<ref>{{Cite web |url=http://www.gunholstersandmore.com/glock-17-holsters/ |title=Glock 17 Holsters |website=Gun Holsters and More |access-date=16 April 2017 |url-status=live |archive-url=https://web.archive.org/web/20170416220902/http://www.gunholstersandmore.com/glock-17-holsters/ |archive-date=16 April 2017}}</ref> The [[Trigger (firearms)#Function|striker firing mechanism]] has a spring-loaded [[firing pin]] that is cocked in two stages that the firing pin spring powers. The factory-standard firing pin spring is rated at {{convert|24|N|lb-f|1|lk=on|abbr=on}}, but by using a modified firing pin spring, it can be increased to {{convert|28|N|lb-f|abbr=on|1}} or to {{convert|31|N|lb-f|abbr=on|1}}.<ref name="us.glock.com">{{Cite web |url=http://us.glock.com/documents/BG_Gen4_6_2010_EN_MAIL.pdf |title=GLOCK Gen4 "Safe Action"® Pistols and Accessories Brochure |website=Glock Inc. |access-date=22 December 2013 |url-status=dead |archive-url=https://web.archive.org/web/20140824052937/http://us.glock.com/documents/BG_Gen4_6_2010_EN_MAIL.pdf |archive-date=24 August 2014}}</ref> When the pistol is charged, the firing pin is in the half-cock position. As the trigger is pulled, the firing pin is then fully cocked. At the end of its travel, the trigger bar is tilted downward by the connector, releasing the firing pin to fire the cartridge. The connector resets the trigger bar so that the firing pin will be captured in half-cock at the end of the firing cycle. This is known as a [[Trigger (firearms)#Pre-set|preset]] trigger mechanism, referred to as the "Safe action" trigger by the manufacturer. The connector ensures the pistol can only fire semiautomatically.

The factory-standard, two-stage trigger has a trigger travel of {{convert|12.5|mm|in|abbr=on}} and is rated at {{convert|25|N|lb-f|1|lk=on|abbr=on}}, but by using a modified connector, it can be increased to {{convert|35|N|lb-f|abbr=on|1}} or lowered to {{convert|20|N|lb-f|abbr=on|1}}. In response to a request made by American law enforcement agencies for a two-stage trigger with increased trigger pull, Glock introduced the NY1 (New York) trigger module, which features a flat spring in a plastic housing that replaces the trigger bar's standard coil spring. This trigger modification is available in two versions: NY1 and NY2 that are rated at {{convert|25|N|lb-f|abbr=on|1}} to {{convert|40|N|lb-f|abbr=on|1}} and {{convert|32|N|lb-f|abbr=on|1}} to {{convert|50|N|lb-f|abbr=on|1}}, respectively, which require about {{convert|20|N|lb-f|abbr=on|1}} to {{convert|30|N|lb-f|abbr=on|1}} of force to disengage the safeties and another {{convert|10|N|lb-f|abbr=on|1}} to {{convert|20|N|lb-f|abbr=on|1}} in the second stage to fire a shot.

The Glock's frame, magazine body, and several other components are made from a high-strength nylon-based [[polymer]] invented by Gaston Glock, called Polymer 2.{{sfnp|Kasler|1992|p=136}} This plastic was specially formulated to provide increased durability and is more resilient than [[carbon steel]] and most [[Alloy steel|steel alloys]]. Polymer 2 is resistant to shock, [[Corrosive substance|caustic liquids]], and temperature extremes where traditional steel/alloy frames would warp and become brittle.{{sfnp|Kasler|1992|p=136}} The [[Injection molding|injection-molded]] frame contains four hardened steel guide rails for the slide: two at the rear of the frame, and the remaining pair above and in front of the trigger guard. The trigger guard itself is squared off at the front and checkered. The grip has an angle of 109° and a nonslip, [[Stippling#Other uses|stippled]] surface on the sides and both the front and rear straps.<ref>{{Cite web |url=http://www.shootingillustrated.com/articles/2011/1/13/steyr-m40-a1/ |title=Steyr M40-A1 |first=Guy J. |last=Sagi |date=January 13, 2011 |website=Shooting Illustrated |access-date=9 April 2016 |url-status=live |archive-url=https://web.archive.org/web/20160805235909/https://www.shootingillustrated.com/articles/2011/1/13/steyr-m40-a1/ |archive-date=5 August 2016}}</ref> The frame houses the locking block, which is an [[investment casting]] that engages a 45° camming surface on the barrel's lower camming lug. It is retained in the frame by a steel axis pin that holds the trigger and slide catch. The trigger housing is held to the frame by means of a polymer pin. A spring-loaded sheet-metal pressing serves as the slide catch, which is secured from unintentional manipulation by a raised guard molded into the frame. Because of its polymer construction, there were initially fears that Glock pistols would be invisible to airport [[X-ray machine]]s, making them easy to [[Arms trafficking|illegally import]] into the United States. In actuality, 84% of the gun's weight is from steel, and Polymer 2 is visible to X-ray machines. The myth's prevalence is believed to be connected to a scene that perpetuated the myth in ''[[Die Hard 2]]'', which released a few years after the Glock was invented.<ref>{{Cite web |url=https://nationalinterest.org/blog/buzz/glock-7-gun-you-have-nothing-fear-glock-hates-it-143702 |title=Glock 7: The Gun You Have Nothing to Fear From (But Glock Hates It) |last=Suciu |first=Peter |date=13 April 2020 |website=[[The National Interest]]}}</ref> In 1988, the [[Undetectable Firearms Act]] was passed in the United States, banning the manufacture or import of any gun that could pass undetected through a [[metal detector]].

The Glock pistol has a relatively low slide profile, which holds the barrel axis close to the shooter's hand and makes the pistol more comfortable to fire by reducing [[muzzle rise]] and allows for faster aim recovery in rapid firing sequences. The rectangular slide is [[Milling machine|milled]] from a single block of ordnance-grade steel using [[Numerical control|CNC]] machinery.{{sfnp|Kokalis|2001|p=321}} The barrel and slide undergo two hardening processes prior to treatment with a proprietary [[nitriding]] process called [[Tenifer]]. The Tenifer treatment is applied in a {{convert|500|°C|°F}} nitrate bath.{{sfnp|Kasler|1992|p=136}} The Tenifer finish is between {{convert|0.04|and|0.05|mm|in|abbr=on|4}} in thickness, and is characterized by extreme resistance to wear and corrosion; it penetrates the metal, and treated parts have similar properties even below the surface to a certain depth.{{sfnp|Kasler|1992|p=137}}

The Tenifer process produces a matte gray-colored, nonglare surface with a 64 [[Rockwell scale|Rockwell C]] hardness rating and a 99% resistance to salt water corrosion (which meets or exceeds [[stainless steel]] specifications),{{sfnp|Kokalis|2001|p=321}} making the Glock particularly suitable for individuals carrying the pistol [[Concealed carry in the United States|concealed]] as the highly chloride-resistant finish allows the pistol to better endure the effects of perspiration.{{sfnp|Kasler|1992|p=137}} Glock steel parts using the Tenifer treatment are more corrosion resistant than analogous gun parts having other finishes or treatments, including [[Polytetrafluoroethylene|Teflon]], [[Bluing (steel)|bluing]], [[Chrome plating#industrial chrome|hard chrome plating]], or phosphates.{{sfnp|Kasler|1992|p=137}} During 2010, Glock switched from the salt bath nitriding Tenifer process to a not exactly disclosed [[Ferritic nitrocarburizing#Gaseous ferritic nitrocarburizing|gas nitriding]] process. After applying the nitriding process, a black [[Parkerized]] decorative surface finish is applied. The underlying nitriding treatment will remain, protecting these parts even if the decorative surface finish were to wear off.<ref name="MetalTreatments" />

A fourth generation Glock 17 consists of 34 parts.<ref name="us.glock.com" /> For maintenance, the pistol disassembles into five main groups: the barrel, slide, frame, magazine, and recoil-spring assembly. The firearm is designed for the [[NATO]]-standard 9×19mm Parabellum [[Handgun|pistol]] [[Cartridge (firearms)|cartridge]], but can use high-power (increased pressure) +P ammunition with either full-metal-jacket or jacketed hollow-point projectiles.

=== Barrel ===
The hammer-forged barrel has a female type [[polygonal rifling]] with a right-hand twist. The stabilization of the round is not by conventional [[rifling]], using lands and grooves, but rather through a polygonal profile consisting of a series of six or eight interconnected noncircular segments (only the [[.45 ACP]] and [[.45 GAP]] have octagonal polygonal rifling). Each depressed segment within the interior of the barrel is the equivalent of a groove in a conventional barrel. Thus, the interior of the barrel consists of smooth arcs of steel rather than sharply defined slots.

Instead of using a traditional [[Broaching (metalworking)|broaching machine]] to cut the rifling into the bore, the hammer forging process involves beating a slowly rotating [[mandrel]] through the bore to obtain the [[hexagon]]al or [[octagon]]al shape.{{sfnp|Kasler|1992|p=138}} As a result, the barrel's thickness in the area of each groove is not compromised as with conventional square-cut barrels. This has the advantage of providing a better gas seal behind the projectile as the bore has a slightly smaller diameter, which translates into more efficient use of the combustion gases trapped behind the bullet,{{sfnp|Kasler|1992|p=138}} slightly greater (consistency in) muzzle velocities, and increased accuracy and ease of maintenance.<ref name="Barrel History">{{Cite web |url=http://atlantisarms.com/History/Barrel%20History.htm |title=Barrels |date=2004 |website=Atlantis Arms |access-date=3 June 2014 |url-status=dead |archive-url=https://web.archive.org/web/20100420102209/http://atlantisarms.com/History/Barrel%20History.htm |archive-date=20 April 2010}}</ref>

The newer lines of Glock pistols—i.e. Gen5, G42/43—are equipped with the ''Glock Marksmanship Barrel'', or GMB. While older barrels were somewhat difficult to identify a bullet as coming from a particular barrel with high enough reliability for evidentiary use, the newer GMB ones are designed differently. A study by Stephen Christen and Hans Rudolf Jordi, published by ''Forensic Science International'' in February 2019, shows that the new GMB barrels leave more identifiably unique markings on the fired projectile. These marks were more easily identified than previous pistol barrel markings, and were sufficient for reliably tying a bullet to a particular barrel. The study used a comparison microscope and an ABIS (Evofinder).<ref>{{Cite journal |last1=Christen |first1=Stephan |last2=Jordi |first2=Hans Rudolf |date=February 2019 |title=Individuality testing of new Glock pistol barrels 'Marksman Barrel' |journal=Forensic Science International |volume=295 |pages=64–71 |doi=10.1016/j.forsciint.2018.11.028 |pmid=30572221 |s2cid=58648682}}</ref>

=== Safety ===
Glock pistols lack a traditional on-off [[Safety (firearms)|safety]] lever, which Glock markets as an advantage, especially to police departments, as the user is able to fire immediately without separately manipulating a safety.<ref name="bloom-safety">{{Cite web |url=https://www.bloomberg.com/bw/stories/2009-09-09/glock-pistol-used-by-police-raised-safety-issues |title=Glock Pistol Used by Police Raised Safety Issues |last1=Barrett |first1=Paul |last2=Grow |first2=Brian |date=9 September 2009 |website=[[Bloomberg News|Bloomberg]] |access-date=2 January 2016}}</ref> Instead, the pistols are designed with three independent safety mechanisms to prevent accidental discharge. The system, designated "Safe Action" by Glock, consists of an external [[Trigger safety|integrated trigger safety]] and two automatic internal safeties: a firing pin safety and a drop safety.<ref>{{Cite web |url=https://us.glock.com/technology/safe-action |title=Safe-action system |website=Glock Inc. |access-date=18 August 2016 |url-status=live |archive-url=https://web.archive.org/web/20160623235719/https://us.glock.com/technology/safe-action |archive-date=23 June 2016}}</ref> The external safety is a small inner lever contained in the trigger. Pressing the lever activates the trigger bar and sheet metal connector. The firing pin safety is a solid hardened steel pin that, in the secured state, blocks the firing pin channel (disabling the firing pin in its longitudinal axis). It is pushed upward to release the firing pin for firing only when the trigger is actuated and the safety is pushed up through the backward movement of the trigger bar. The drop safety guides the trigger bar in a ramp that is released only when direct rearward pressure is applied to the trigger. The three safety mechanisms are automatically disengaged one after the other when the trigger is squeezed, and are automatically reactivated when the trigger is released.{{sfnp|Woźniak|2001|p=45}}<ref>{{Cite web |url=http://www.businessweek.com/magazine/content/09_38/b4147038111680.htm |title=Glock Pistol Used by Police Raised Safety Issues |last1=Barrett |first1=Paul |last2=Grow |first2=Brian |date=10 September 2009 |website=[[BusinessWeek]] |access-date=29 June 2010 |url-status=dead |archive-url=https://web.archive.org/web/20100115022230/http://www.businessweek.com/magazine/content/09_38/b4147038111680.htm |archive-date=15 January 2010}}</ref>

In 2003, Glock announced the Internal Locking System (ILS) safety feature named Glock Safety Lock.<ref>{{Cite web |url=http://www.glock.com/english/safetypack_lock.htm |title=Glock Safety Lock |website=Glock |url-status=dead |archive-url=https://web.archive.org/web/20110724095054fw_/http://www.glock.com/english/safetypack_lock.htm |archive-date=24 July 2011}}</ref> The ILS is a manually activated lock located in the back of the pistol's grip. It is cylindrical in design and, according to Glock, each key is unique. When activated, the lock causes a tab to protrude from the rear of the grip, giving both a visual and tactile indication as to whether the lock is engaged or not.<ref>{{Cite patent |title=Trigger safety lock for pistols and trigger assembly |country=US |number=6843013 |pubdate=2005-01-18 |inventor1-last=Cutini |inventor1-first=Jorge Enrique |inventor2-last=Mareque |inventor2-first=Fernando}}</ref> When activated, the ILS renders the Glock unfireable, as well as making it impossible to disassemble. When disengaged, the ILS adds no further safety mechanisms to the Glock pistol. The ILS is available as an option on most Glock pistols. Glock pistols cannot be retrofitted to accommodate the ILS. The lock must be factory-built in Austria and shipped as a special order.{{Citation needed|date=February 2022}}

===Feeding===
[[File:Glock 17 magazine.JPG|thumb|upright|A Glock 9×19mm Parabellum 17-round magazine. The numbered witness holes at the back portion visually indicate how many cartridges are contained in the magazine.]]

The Glock 17 feeds from staggered-column or double stack [[Magazine (firearms)|magazine]]s that have a 17-round capacity (which can be extended to 19 with an optional floor plate) or optional 24 or 33-round [[high-capacity magazine]]s.<ref>{{Cite web |url=http://www.glock.com/english/index_magazines.htm |title=Glock magazines |website=Glock |url-status=dead |archive-url=https://web.archive.org/web/20101208011649/http://www.glock.com/english/index_magazines.htm |archive-date=8 December 2010}}</ref> For jurisdictions which restrict magazine capacity to 10 rounds, Glock offers single-stack, 10-round magazines. The magazines are made of steel and are overmolded with plastic. A steel spring drives a plastic follower. After the last cartridge has been fired, the slide remains open on the slide stop. The slide stop release lever is located on the left side of the frame directly beneath the slide and can be manipulated by the thumb of the right-handed shooter.

Glock magazines are interchangeable between models of the same caliber, meaning that a compact or subcompact pistol will accept magazines designed for the larger pistols chambered for the same round. However, magazines designed for compact and subcompact models will not function in larger pistols because they are not tall enough to reach the slide and magazine release. For example, the subcompact Glock 26 will accept magazines from both the full-size Glock 17 and the compact Glock 19, but the Glock 17 will not accept magazines from the smaller Glock 19 or the Glock 26. The magazines for the Glock 36, the Glock 42, the Glock 43, and the Glock 44 are all unique; they cannot use magazines intended for another model, nor can their magazines be used in other models.

=== Sights ===
[[File:Glock 17 9mmPara 004.jpg|thumb|upright|Standard sighting arrangement of a "first-generation" Glock 17]]

The first Glock pistols sent to the United States in 1985 failed to meet the BATF import "points" requirement, requiring Glock to quickly develop an [[:File:Glock "Weekend" Adjustable Sight..jpg|adjustable rear sight]] which allowed for the pistols to be imported and sold commercially in 1986. It is believed that Glock designed and created this adjustable rear sight over a weekend in order to meet the ATF's importation requirements, and so it was dubbed the "weekend" sight. These first-generation adjustable rear sights extended past the slide and were susceptible to breaking.{{sfnp|Kasler|1992|pp=8-9}} Even on later models, the front sight can easily become misshapen from friction against the holster,<ref>{{Cite web |url=https://defensereview.com/improving-your-glock-for-under-100-part-ii-connectors-sights-and-magpul-magwell/ |title=Improving your Glock for under $100 Part II: Connectors, Sights and Magpul Magwell! |last=Gurwitch |first=Jeff |website=Defense Review |language=en-US |access-date=19 July 2021}}</ref> leading to replacements with metal sights, or [[Tritium radioluminescence|tritium illuminated]] night sights.<ref>{{Cite web |url=https://nationalinterest.org/blog/buzz/shootout-5-ways-make-glock-even-deadlier-45332 |title=Shootout: 5 Ways to Make a Glock Even Deadlier |last=Gao |first=Charlie |date=23 February 2019 |website=The National Interest |language=en |access-date=19 July 2021}}</ref>

More commonly today, the Glock 17 has a fixed polymer combat-type [[iron sight|sighting arrangement]] that consists of a ramped front sight and a notched rear sight with white contrast elements painted on for increased acquisition speed – a white dot on the front post and a rectangular border on the rear notch. Some newer rear sights can be adjusted for windage (on certain models due to the windage sights not coming as factory default), as it has a degree of lateral movement in the dovetail it is mounted in. Three other factory rear sight configurations are available in addition to the standard {{convert|6.5|mm|in|adj=on|abbr=on|2}} height sight: a lower impact {{convert|6.1|mm|in|adj=on|abbr=on|2}} sight, and two higher impact versions – {{convert|6.9|mm|in|abbr=on|2}} and {{convert|7.3|mm|in|abbr=on|2}}.{{sfnp|Kokalis|2001|p=322}}

=== Accessories ===
{{unreferenced section|date=June 2023}}
The Glock pistol accessories available from the factory include several devices for tactical illumination, such as a series of front rail-mounted "Glock tactical lights" featuring a white tactical light and an optional visible laser sight. An alternate version of the tactical light using an invisible [[infrared]] light and laser sight is available, designed to be used with an infrared [[night vision device]]. Another lighting accessory is an adapter to mount a flashlight onto the bottom of a magazine.

Polymer holsters in various configurations and matching magazine pouches are available. In addition, Glock produces optional triggers, recoil springs, slide stops, magazine release levers, and maritime spring cups. Maritime spring cups are designed to allow the pistol to be fired immediately after being submerged in water. They feature additional openings that allow liquids to flow and escape around them, offering enhanced reliability when water has penetrated into the firing pin assembly channel.

Magazine floor plates (or +2 baseplates), which expand the capacity of the standard magazines by two rounds, are available for models chambered for the 9×19mm Parabellum, .45 GAP, .40 S&W, [[.357 SIG]], and [[.380 ACP]] cartridges. In addition to the standard nonadjustable polymer sight line, three alternative sight lines are offered by Glock. These consist of steel, adjustable, and self-illuminating [[Tritium sights|tritium]] night rear sights and factory steel and self-illuminating tritium contrast pointer steel front sights.<ref>{{Cite web |title=GLOCK Inc. {{!}} GLOCK Pistols {{!}} Buy Guns Online |url=https://us.glock.com/en |access-date=2023-11-07 |website=us.glock.com}}</ref>

The Glock 17 along with many variants can accept pistol conversion kits, with one such example being the FAB-Defense KPOS Scout.<ref>{{cite web |url=http://fab-defense.co.il/en/category-magazines-and-accessories/id-2361/new-pistol-conversion-kit-for-glock-17-19.html |title= Glock configurations}}</ref> They can also accept special stocks like the Flux Defense Brace.<ref>{{cite web |url=http://firearmsnews.com/editorial/flux-defense-equipped-glock-ultimate-pdw/386781 |title= Stock attachments: Glock}}</ref>

==== Glock switch ====
{{main|Glock switch}}
A Glock switch is an aftermarket accessory which depresses the firearm's [[sear (firearm)|sear]], allowing fully automatic fire. Without the [[Title II weapons|proper license]], they are illegal in the United States.<ref>{{cite web |url=https://www.vice.com/en/article/pkp8p8/glock-switches-auto-sears |title=Tiny 'Glock Switches' Have Quietly Flooded the US With Deadly Machine Guns |last1=Stephens |first1=Alain |last2=Hamilton |first2=Keegan |date=24 March 2022 |website=[[Vice (magazine)|Vice]] |access-date=3 September 2022}}</ref>

=== Commemorative, anniversary, engraved, and other rare Glocks ===
Glock began producing limited edition and commemorative Glocks in 1991. Glock later produced a series of anniversary models to celebrate business milestones and in honor of 20, 25, and 30 years of US sales. Additionally, many law enforcement agencies had the department name, logo, or badges engraved on the slides of issued duty weapons.<ref name="Sadowski" />

== Variants ==
Following the introduction of the Glock 17, numerous variants and versions have been offered. Variants that differ in caliber, frame, and slide length are identified by different model numbers with the exception of a few models with a letter suffix ( the Glock 17L, 19X, 30S, and 43X).

The original double-stack "small frame" Glock pistols are made in five form factors, all modeled after the original full-sized Glock 17. "Standard" models are designed as full-sized duty firearms with a large magazine capacity. "Compact" models are slightly smaller with reduced magazine capacity and lighter weight while maintaining a usable grip length. "[[Subcompact pistols|Subcompact]]" models are designed for easier carry and being lighter and shorter, are intended to be used with two fingers on the grip below the trigger guard and lack an accessory rail like the larger, after generation two, Glock models. The other two form factors use the full-size "standard" frame with longer slides that include a lower section to fill in the space between the frame's dust cover and the front of the slide. The first of these are the "long slide" models, which were too long for certain IPSC classes, necessitating the creation of the intermediate "competition" models. Currently, available chamberings for all five form-factors are 9mm Parabellum (9x21mm in certain countries) and .40 Smith & Wesson. Additionally, .357 SIG and .45 GAP chamberings are offered in "standard", "compact", and "subcompact" models, while .380 ACP is offered only in "compact" and "sub-compact" models. Recently, so-called "crossover" versions in 9mm Parabellum pair short (front to back) "compact" frames with longer "standard" grip lengths. This was initially to provide a longer-grip, higher capacity version of the Glock 19 (Glock 19X and Glock 45), but Glock developed the Glock 47 for US Customs and Border Patrol which used the G45 frame with a G17 length slide that included a front section to fill in the gap between the dust cover and the front of the slide, a design that fits the same overall dimensions as the Glock 17. Naturally, the next step was to couple this slide with the Glock 19 Frame, creating the Glock 49.

There are also the wider double-stack "large frame" Glock pistols for use with larger calibers, currently in [[10mm Auto]] and .45 ACP. These models have bigger, wider slides and frames and are larger than the smaller-chambered pistols. These come in only "standard", "subcompact", "competition" (.45 ACP only), and "long slide" (10mm only). Additionally, Glock introduced the "subcompact" Glock 30S in .45 ACP adjusted to use the slimmer lighter slide of the Glock 36. Also, in 2007, Glock introduced a "short frame" version of these large frame weapons to provide a grip better suited to small hands. The short frame was originally designed to compete in the now cancelled U.S. military [[Joint Combat Pistol]] trials for a new .45 ACP pistol to replace the [[M9 pistol]]. Glock's entry featured an optional ambidextrous magazine release and [[Picatinny rail|MIL-STD-1913]] rail along with a reduction in the size of the backstrap. The Glock 21SF was originally available in three versions: one with a Picatinny rail and ambidextrous magazine release and two with a Universal Glock rail available with or without the ambidextrous magazine release. However, the ambidextrous release and picatinny rail were soon dropped. As of January 2009, the Glock 20, 21, 29, and 30 were offered in short-framed variations. These models incorporate a {{convert|2.5|mm|in|abbr=on}} reduction in trigger reach, and full-sized models feature a {{convert|4|mm|in|adj=on|abbr=on}} reduction in heel depth, which corresponds to an overall reduction in length for those models.<ref name="2009ShotShow">{{Cite web |url=http://www.reuters.com/article/idUS231377+15-Jan-2009+PRN20090115 |title=New Product Announcements for Glock, Inc. at 2009 SHOT Show |date=January 15, 2009 |website=[[Reuters]]|access-date=16 April 2017 |url-status=dead |archive-url=https://web.archive.org/web/20090428185525/http://www.reuters.com/article/idUS231377+15-Jan-2009+PRN20090115 |archive-date=2009-04-28}}</ref><ref>{{Cite web |url=http://www.ibtimes.com/prnews/20080202/ga-glock-30-sf-45.htm |title=Glock, Inc. Introduces New Glock 30 SF .45 Auto Short Frame Pistol at SHOT Show in Las Vegas |date=February 2, 2008 |website=[[International Business Times]] |url-status=dead |archive-url=https://web.archive.org/web/20080209114038/http://www.ibtimes.com/prnews/20080202/ga-glock-30-sf-45.htm |archive-date=9 February 2008}}</ref><ref>{{Cite web |url=http://www.teamglock.com/PDF-Files/G21%20SF%20Picatinny%20Shot%20Show%202007.pdf |title=GLOCK, Inc. Announces New .45 Semiautomatic Short Frame Pistol with New Features |website=Glock Inc. |access-date=24 July 2009 |url-status=dead |archive-url=https://web.archive.org/web/20071029231440/http://www.teamglock.com/PDF-Files/G21%20SF%20Picatinny%20Shot%20Show%202007.pdf |archive-date=29 October 2007}}</ref> The short frame models were not introduced for the Gen 4 and Gen 5 models, as the replaceable backstraps design makes a separate short frame version redundant.

Glock also produces single-stack "slimline" models, targeting the concealed carry market. The first was introduced with Gen 3 in .45 ACP as the Glock 36. More recently, after the introduction of Gen 5, came the Glock 42 in .380 ACP, followed by the Glock 43 in 9mm Parabellum. The most recent additions to the "slimline" series, the 43X and 48, were introduced together in 9mm Parabellum. These have longer grips that allow for a full three-finger hold and a 10-round capacity. The 43X is a long grip "crossover" 43, while the .48 has a longer slide to provide a "slimline" version of the "compact" Glock 19.

{| class="wikitable" style="font-size: 95%;"
|+ Glock Variants with normal frame width (slide size/grip size)
|-
! Caliber
! Subcompact (SC)/SC
! Compact (C)/C
! C/Standard (Std)
! Std/C
! Std/Std
! Competition/Std
! Long Slide/Std
|-bb
! [[#9×19mm_Parabellum|9×19mm]]
| G26
| G19,{{Efn|G19 compact size slide is interchangeable with G47 and G49 standard size slides and the G19X and G45 compact size slides.}} G46 
| G19X,{{Efn|G19X compact size slide is interchangeable with G47 and G49 standard size slides and the G19 and G45 compact size slides.}} G45{{Efn|G45 compact size slide is interchangeable with G47 and G49 standard size slides and the G19 and G19X compact size slides.}}
| G49{{Efn|G49 standard size slide is interchangeable with G47 standard size slide and G19, G19X, and G45 compact size slides.}}
| G17,{{Efn|G17 standard size slide is interchangeable with G17L long slide and G34 competition size slide.}} G18, G47,{{Efn|G47 standard size slide is interchangeable with G49 standard size slide and G19, G19X, and G45 compact size slides.}} P80
| G34{{Efn|G34 competition size slide is interchangeable with G17 standard size slide and G17L long slide.}}
| G17L{{Efn|G17L long slide is interchangeable with G17 standard size slide and G34 competition size slide.}}
|-
! [[#10mm_Auto|10mm Auto]]
| G29
|
|
|
| G20{{Efn|G20 standard size slide is interchangeable with G40 long slide.}}
| 
| G40{{Efn|G40 long slide is interchangeable with G20 standard size slide.}}
|-
! [[#.45_ACP|.45 ACP]]
| G30, G30S{{Efn|G30S slim slide is interchangeable with G36 slim slide.}}
|
|
|
| G21{{Efn|G21 standard size slide is interchangeable with G41 long slide.}}
| G41{{Efn|G41 long slide is interchangeable with G21 standard size slide.}}
| 
|-
! [[#.40_S&W|.40 S&W]]
| G27
| G23
|
|
| G22{{Efn|G22 standard size slide is interchangeable with G24 long slide and G35 competition size slide.}}
| G35{{Efn|G35 competition size slide is interchangeable with G22 standard size slide and G24 long slide.}}
| G24{{Efn|G24 long slide is interchangeable with G22 standard size slide and G35 competition size slide.}}
|-
! [[#.380 ACP|.380 Auto]]
| G28
| G25
|
| 
|
| 
| 
|-
! [[#.357 SIG|.357 SIG]]
| G33
| G32
|
|
| G31
| 
| 
|-
! [[#.45_GAP|.45 G.A.P.]]
| G39
| G38
|
|
| G37
| 
|-
! [[#.22_LR|22 LR]]
| 
| G44
| 
| 
|
| 
| 
|-
|}
{{Notelist}}

{| class="wikitable" style="font-size: 95%;"
|+ Glock Variants with slimline frame width (slide size/grip size)
|-
! Caliber
! Subcompact (SC)/SC
! SC/Compact (C)
! C/C
|-
! [[#9×19mm_Parabellum|9×19mm]]
| G43 (slim){{efn|G43 subcompact size slide is interchangeable with G43X subcompact and G48 compact slide.}}
| G43X (slim){{efn|G43X subcompact size slide is interchangeable with G43 subcompact and G48 compact slide.}}
| G48 (slim){{efn|G48 compact size slide is interchangeable with subcompact slides of G43 and G43X.}}
|-
|-
! [[#.45_ACP|.45 ACP]]
| G36 (slim){{Efn|G36 slim slide is interchangeable with G30S slim slide.}}
| 
|
|-
! [[#.380 ACP|.380 Auto]]
| G42 (slim)
|
| 
|-
|}
{{Notelist}}

=== 9×19mm Parabellum ===
* '''Glock 17''': The Glock 17{{Anchor|Glock 17}} is the original 9×19mm Parabellum model, with a standard magazine capacity of 17 rounds, introduced in 1982. Glock also offers a version of the standard magazine which incorporates a longer "+2" base plate to provide a capacity of 19 rounds. Also, a 10-round version of the standard magazine was created for markets that restrict the magazine capacity of handguns. And, Glock offers an extended 24 round (with flush base plate) magazine for the Glock 17. Finally, the Glock 17 can use the Glock 18's extended 33 round (with +2 base plate) magazine. The base plates for the extended magazines can be swapped out to create 26 and 31 round magazines as well. The longest serving of the Glocks, the Glock 17 can be had with numerous "options" such as a threaded barrel, or slides cut for the Multi Optic System (MOS). Some options, such as the universal Glock rail have become standard. In addition, some features have been given their own suffixed model designations creating entirely new models, all of which can use the same magazines as the Glock 17:
** '''Glock 17L''': Introduced in 1988, the 17L incorporates a longer slide and extended barrel. Initially, the Glock 17L had three holes in the top of the barrel and a corresponding slot in the slide; however, later production pistols lack the holes in the barrel. The Glock 17L is manufactured in limited quantities.
** '''Glock 17C''': Introduced in 1996, the 17C incorporates slots cut in the barrel and slide to [[Muzzle brake|compensate for recoil]]. Many other Glock pistols now come with this option, all with a "C" suffix on the slide.
** '''Glock 17MB''': The 17MB is a version with ambidextrous magazine catch. This model, along with the other MB variants, was no longer available upon the introduction of the fourth-generation models, which have a reversible magazine catch.
** '''Glock 17M''': Introduced in 2016, the 17M was created in response to an FBI solicitation for a new full-size 9mm pistol. Differences from the Generation 4 model include removal of the finger grooves, ambidextrous slide lock, rounded slide nose profile, flared magazine well with new magazine baseplates, and a tougher finish on metal components. The Glock 17M also abandons the polygonal rifling of previous models for conventional rifling.<ref>{{Cite web |url=https://handgunplanet.com/review/glock-17m-the-inside-scoop-photo-documentary/ |title=Glock 17M: The 'Inside' Scoop (Photo Documentary) |date=30 March 2017 |website=Handgun Planet |access-date=30 July 2018 |url-status=live |archive-url=https://web.archive.org/web/20180711064050/https://handgunplanet.com/review/glock-17m-the-inside-scoop-photo-documentary/ |archive-date=11 July 2018}}</ref> {{As of|2017}}, the [[Federal Bureau of Investigation]], the [[South Carolina Highway Patrol]] and the [[Ontario Provincial Police]]<ref name="glock.com">{{Cite press release |url=https://us.glock.com/press%20release/pages/ontario%20provincial%20police%20replaces%20its%20current%20pistols%20with%20glock%20pistols |title=Ontario Provincial Police Replaces its Current Pistols with GLOCK Pistols |date=12 June 2017 |publisher=U.S. Headquarters, Glock |access-date=30 July 2018 |url-status=live |archive-url=https://web.archive.org/web/20180730080551/https://us.glock.com/press%20release/pages/ontario%20provincial%20police%20replaces%20its%20current%20pistols%20with%20glock%20pistols |archive-date=30 July 2018}}</ref> have adopted the pistol as standard.
** '''Glock P80''': Introduced in 2020, the P80 was commissioned by United States firearms distributor Lipsey's to create an exclusive commemorative Glock model, the Pistole 80. The P80 is a throwback to the original Glock 17 Gen 1 type pistol chambered in 9×19mm with original Gen 1 frame and stippling and Gen 2 / Gen 3 internals.

[[File:MarineCorpsGlock18.jpg|thumb|Man firing a fully automatic 9×19mm Glock 18 machine pistol with a shoulder stock]]

* '''Glock 18''': The Glock 18{{Anchor|Glock 18}} is a [[selective fire|selective-fire]] variant of the Glock 17, developed at the request of the Austrian [[counter-terrorism|counter-terrorist]] unit [[EKO Cobra]], and as a way to internally test Glock components under high strain conditions.<ref>{{Cite web |url=http://www.thefirearmblog.com/blog/2017/08/17/tfb-tv-glock-18-machine-pistol-mini-documentary/ |title=TFB TV Glock 18 Machine Pistol Mini-Documentary |date=17 August 2017 |website=The Firearm Blog |access-date=11 October 2017 |url-status=live |archive-url=https://web.archive.org/web/20171012043620/http://www.thefirearmblog.com/blog/2017/08/17/tfb-tv-glock-18-machine-pistol-mini-documentary/ |archive-date=12 October 2017}}</ref> Originally produced in 1986, this [[machine pistol]]–class firearm has a lever-type fire-control circular selector switch, installed on the serrated portion of the rear left side of the slide. With the selector lever in the bottom position, the pistol fires [[Automatic firearm|fully automatically]] at a [[Rate of fire#Cyclic rate|cyclic rate]] of 1,100–1,200 RPM (rounds per minute), and with the selector lever in the top position, the pistol fires semi-automatically. The firearm is typically used with an extended 33-round-capacity magazine and may be fired with or without a shoulder stock, although other magazines from the Glock 17 can be used, with available capacities of 10, 17, 19 or 24 rounds. Unlike all its other pistols, it is only offered to military, law enforcement, and government organizations.<ref name="guns.com">{{Cite web |url=http://www.guns.com/2017/08/07/glock-18-the-machine-pistol/ |title=Hands-on with Glock 18: The elusive machine pistol (VIDEO) |date=7 August 2017 |website=Guns.com |access-date=11 October 2017 |url-status=live |archive-url=https://web.archive.org/web/20171011232935/http://www.guns.com/2017/08/07/glock-18-the-machine-pistol/ |archive-date=11 October 2017}}</ref> Early Glock 18 models were ported to reduce [[muzzle rise]] during automatic fire. A very early design introduced a longer ported barrel which was soon discarded as it would not fit in a holster. Another compensated variant was produced, known as the Glock 18C. It has a keyhole opening cut into the forward portion of the slide, similar to the opening on the Glock long-slide models, although the Glock 18 has a standard-length slide. The keyhole opening provides an area to allow the four, progressively larger (from back to front) compensator cuts machined into the barrel to vent the propellant gases upwards, affording more control over the rapid-firing machine pistol.
** '''Glock 18C''': The compensator cuts start about halfway back on the top of the barrel. The two rear cuts are narrower than the two front cuts. The slide is hollowed, or dished-out, in a rectangular pattern between the rear of the ejection port and the rear sight. The rate of fire in fully automatic mode is around 1,100–1,200 rounds per minute. Most of the other characteristics are equivalent to the Glock 17, although the slide, frame, and certain fire-control parts of the Glock 18 are not interchangeable with other Glock models.<ref>{{Cite web |url=http://www.janes.com/extracts/extract/jiw/jiw_0006.html |title=Glock 18 selective-fire automatic pistol (Austria), Pistols |date=2008 |website=Janes.com |url-status=dead |archive-url=https://web.archive.org/web/20090213084320/http://www.janes.com/extracts/extract/jiw/jiw_0006.html |archive-date=13 February 2009}}</ref><ref>{{Cite web |url=http://www.cybershooters.org/?page_id=528 |title=Glock 18 |website=Cybershooters.org |access-date=24 July 2009 |url-status=live |archive-url=https://web.archive.org/web/20150622091944/https://www.cybershooters.org/?page_id=528 |archive-date=22 June 2015}}</ref>
* '''Glock 19''': The Glock 19 {{Anchor|Glock 19}} is effectively a reduced-size Glock 17, called the "Compact" by the manufacturer. It was first produced in 1988, primarily for military and law enforcement. The Glock 19's barrel and pistol grip are shorter by about {{convert|12|mm|in|abbr=on|1}} than the Glock 17, and it uses a magazine with a standard capacity of 15 rounds. A 10 round version of this magazine is also made for markets that restrict the magazine capacity of handguns. And, a "+2" base plate can make the standard magazine into a longer 17 round magazine. The pistol is also compatible with any magazines designed for the Glock 17 and Glock 18, providing factory magazine capacities of 17, 19, 24 and 33. Changing out base plates adds capacities of  26 or 31. To preserve the operational reliability of the short recoil system, the mass of the slide remains the same as in the Glock 17 from which it is derived. With the exception of the slide, frame, barrel, locking block, recoil spring, guide rod, and slide lock spring, all of the other components are interchangeable between the models 17 and 19. The Glock 19 Gen 4 MOS (Modular Optic System) has also been used by Special Operations Forces as the '''MK27 MOD 2'''.<ref name="mk27 nsn">{{cite web |url=https://www.nsnlookup.com/fsg-10/fsc-1005/us/1005-01-658-1930-pistol-millimeter-semi-automatic-1005016581930-016581930-fg195a712mos-fg195a712mosu-ug1950702mosu |title=Pistol, 9 Millimeter, Semi-Automatic |website=NSN Lookup |access-date=16 May 2022}}</ref> One of the oldest of the Glock pistols, options like threaded barrel and MOS slide cuts are available, and suffixed model designations have been created for some features, all of which excepting the G19X can use any magazine the G19 can:
[[File:Glock 19X.svg|thumb|Glock 19X proposed by [[Glock Ges.m.b.H.]] for [[XM17 Modular Handgun System competition]].]]
** '''Glock 19X''': The 19X is the civilian version of Glock's entry to the [[XM17 Modular Handgun System competition]] for the [[US Military]]. It features a Glock 19 slide with a Glock 17-like frame in coyote color instead of the regular Glock black color. The frame includes a lanyard loop and a front lip in the magazine which purpose is to make changing magazines with gloves on easier, but this means the new Gen 5 17-round magazines cannot be used in the Glock 19X because the front lip will block the extended magazine floor plates from locking into the 19X's magazine well. This can be remedied by switching to a Gen 4–style magazine floor plate<ref>{{Cite web |url=https://www.alloutdoor.com/2018/01/08/glock-19x-magazine-compatibility-issues/ |title=Glock 19X Magazine Compatibility Issues |last=Felts |first=Kevin |date=8 January 2018 |website=AllOutdoor.com |access-date=13 February 2019 |url-status=live |archive-url=https://web.archive.org/web/20190213123906/https://www.alloutdoor.com/2018/01/08/glock-19x-magazine-compatibility-issues/ |archive-date=13 February 2019}}</ref> or with a factory +2 extension. The G19X can use any factory G17 magazine for Gen 4 and prior. It is only the Gen 5 17 and 19 round magazines that it can't accept. The 19X comes standard with night sights and includes one 17-round magazine and two 19-round magazines, all in coyote color. The Glock 19X has proven to be one of Glock's best selling pistols, with over 100,000 sold within 6 months of the 19X first being released.<ref>{{Cite press release |url=https://us.glock.com/en/press-release/pages/glock-19x-reaches-sales-milestone-in-less-than-6-months |title=GLOCK 19X Reaches Sales Milestone in Less than 6 Months |date=10 July 2018 |publisher=Glock Inc. |access-date=13 February 2019 |url-status=dead |archive-url=https://web.archive.org/web/20190213183419/https://us.glock.com/en/press-release/pages/glock-19x-reaches-sales-milestone-in-less-than-6-months |archive-date=13 February 2019}}</ref> 
** '''Glock 19M''':{{Anchor|Glock 19M}} Introduced in 2016, the 19M was created in response to an FBI solicitation for a new compact 9mm pistol. Differences from the Generation 4 model include removal of the finger grooves, ambidextrous slide stop, rounded slide nose profile, flared magazine well with new magazine baseplates, and a tougher finish on metal components. The Glock 19M also abandons the polygonal rifling of previous models for conventional rifling. The US Marine Corps fielded the Glock 19M, designated as the M007, to CID (Criminal Investigation Division) and [[Marine One]] personnel.<ref>{{Cite web |url=https://www.tactical-life.com/news/marines-glock-19m-m007-pistol/ |title=USMC Fielding New Concealable Glock 19M 'M007' Pistol |date=10 November 2017 |website=Tactical-Life |access-date=19 November 2020}}</ref>
** '''Glock 19 Canadian''': The limit for Restricted Class firearms in Canada is a 105mm barrel, so, due to its 102mm barrel, the standard Glock 19 is too short to be legal. Starting in 2017, a market specific Glock 19 has been sold in Canada with a 106mm barrel and a distinctive laser-engraved hollow maple leaf on the right side of the slide.<ref>{{Cite web |url=https://thegunblog.ca/2017/09/17/glock-to-make-g19-for-canada-with-special-barrel-maple-leaf/ |title=Glock 19 Canadian Version Coming With Special Barrel, Maple Leaf |date=17 September 2017 |website=The Gun Blog}}</ref><ref>{{Cite web |url=https://www.youtube.com/watch?v=XgxeqAuIODE |title=What does a Canadian Glock 19 look like? &#124; Unboxing the Glock 19 Gen 4 Canadian Edition |author=Firearms Outlet Canada |date=4 May 2018 |website=[[YouTube]] |url-status=live |archive-url=https://ghostarchive.org/varchive/youtube/20211028/XgxeqAuIODE| archive-date=2021-10-28}}{{cbignore}}</ref>
[[File:Glock 26 (6971790359).jpg|thumb|The subcompact Glock 26 with [[Tritium illumination#Uses|tritium night sights]] in 9×19mm Parabellum.]]

* '''Glock 26''': The Glock 26 {{Anchor|Glock 26}} is a 9×19mm "[[Subcompact pistols|subcompact]]" variant designed for [[concealed carry in the United States|concealed carry]] and was introduced in 1995, mainly for the civilian market. It has also been acquired by the US military and designated '''MK 26'''.<ref name="mk26 nsn">{{cite web |url=https://www.nsnlookup.com/fsg-10/fsc-1005/us/1005-01-658-7261-pistol-millimeter-semi-automatic-1005016587261-016587261-pn-2650716 |title=National Stock Number NSN 1005-01-658-7261, 1005016587261 |website=NSN Lookup |access-date=2 May 2022 |url-status=live |archive-url=https://web.archive.org/web/20220617151048/https://www.nsnlookup.com/fsg-10/fsc-1005/us/1005-01-658-7261-pistol-millimeter-semi-automatic-1005016587261-016587261-pn-2650716 |archive-date=17 June 2022}}</ref><ref name="mk26 NDIA">{{cite web |url=https://ndiastorage.blob.core.usgovcloudapi.net/ndia/2012/armaments/Tuesday13939SkipBarth.pdf |title=National Defense Industrial Association: Equipping the SOF Ground Combatant |last1=Barth |first1=Skip |website=NDIA Proceedings |access-date=18 May 2022 |url-status=live |archive-url=https://web.archive.org/web/20190831055824/https://ndiastorage.blob.core.usgovcloudapi.net/ndia/2012/armaments/Tuesday13939SkipBarth.pdf |archive-date=31 August 2019}}</ref><ref name="Guns of Delta">{{cite magazine |url=https://gunpowdermagazine.com/the-guns-of-delta-force/ |title=The Guns of Delta Force |last1=Gray |first1=Warren |date=20 June 2020 |magazine=Gunpowder |access-date=18 May 2022 |url-status=live |archive-url=https://web.archive.org/web/20210413033013/https://gunpowdermagazine.com/the-guns-of-delta-force/ |archive-date=13 April 2021}}</ref> It features a smaller frame compared to the Glock 19, with a pistol grip that supports only two fingers, a shorter barrel and slide, and a double-stack magazine with a standard capacity of 10 rounds. A factory magazine with a +2 extension gives a capacity of 12 rounds. In addition, the Glock 26 can use factory magazines from the Glock 17, Glock 18, and Glock 19, and one can swap out base plates to give it capacities of 15, 17, 19, 24, 26, 31 and 33 rounds. More than simply a "shortened" Glock 19, design of the subcompact Glock 26 required extensive rework of the frame, locking block, and spring assembly that features a dual recoil spring. MOS options are available, but so far the Glock universal rail is not offered. There is also:
** '''Glock 26 for [[U.S. Customs and Border Protection]] (CBP)''': This Glock is a Generation 5 Glock for the CBP that incorporates a flared magazine well with an extended, longer grip than that of the usual Gen 5 Glock 26. Moreover, the magazine well is flat across and has no bump as the Glock 25 Gen 5 or the G19X. In addition, it offers a Longer 11-round magazine.<ref>{{Cite web |url=https://www.thefirearmblog.com/blog/2019/04/11/glock-g47-cbp |title=TFB EXCLUSIVE: New CBP GLOCK G47, G19 MOS And G26 |date=11 April 2019 |website=The Firearm Blog |access-date=26 April 2020}}</ref>
* '''Glock 34''': The Glock 34 {{Anchor|Glock 34}} is a competition version of the Glock 17. It is similar to its predecessor, the Glock 17L, but with a slightly shorter slide and barrel, to meet the maximum size requirements for many sanctioned action pistol sporting events. It was developed and produced in 1998, and compared to the Glock 17, features a {{convert|21|mm|abbr=on|1}} longer barrel and slide. It has an extended magazine release, extended slide stop lever, {{convert|20|N|lb-f|1|lk=on|abbr=on}} trigger pull, and an adjustable rear sight. The sides at the front of the slide are slanted instead of squared. Further, the top of the slide and parts of its inside are milled out, creating a conspicuous hole at the top designed to reduce front-end muzzle weight to better balance the pistol and reduce the overall weight of the slide.<ref>{{Cite magazine |url=http://www.themodernsurvivalist.com/archives/81 |title=The Glock 34 |last=Ayoob |first=Massad |date=September 1999 |magazine=[[Guns (magazine)|Guns]] |publisher=The Modern Survivalist |access-date=1 March 2017 |url-status=live |archive-url=https://web.archive.org/web/20170301182714/http://www.themodernsurvivalist.com/archives/81 |archive-date=1 March 2017}}</ref> The Glock 34 can accept any magazine the Glock 17 can accept.
* '''Glock 43''': The Glock 43{{Anchor|Glock 43}} is a "slimline" version of the subcompact Glock 26 that features an ultracompact slide and frame. The Glock 43 is the first Glock pistol to be manufactured with a single-stack 9×19mm Parabellum magazine, having a standard capacity of six rounds and being unique to the model. Unlike other subcompact Glock pistols, the Glock 43 cannot use factory magazines from its larger relatives due to its single-stack magazine design. It also does not allow the removal of the backplate grip as is possible on the 4th gen Glocks. The magazine is thinner than the Glock 43X, and the Glock 43 cannot accept magazines for the Glock 43X.
** '''Glock 43X''': The 43X is similar to the 43 except it has a longer and thicker grip for an increased magazine capacity of 10 rounds. The grip of the Glock 43X is comparable to the 48 and can be interchanged. Glock 43X magazines do not fit into the Glock 43, or vice versa. The 43X also features front slide serrations, a built-in extended beaver tail, a reversible magazine catch (similar to Gen 5 models), GMB rifling (again similar to Gen 5 models), and a two-tone finish (silver slide/black receiver).<ref>{{Cite web |url=https://glockcollectorsassociation.org/blogs/news/the-skinny-on-the-new-slimline-g43x-and-g48.html |title=The Skinny on the New "Slimline" G43X and G48 |date=4 January 2019 |language=en-US |work=Glock Collectors Association |access-date=4 January 2019 |url-status=live |archive-url=https://web.archive.org/web/20190131040652/https://glockcollectorsassociation.org/blogs/news/the-skinny-on-the-new-slimline-g43x-and-g48.html |archive-date=31 January 2019}}</ref> In the E.U. the 43X comes with a rail.<ref name="Glock Collectors Association" /> At least three aftermarket sources manufacture 15 round flush-fit magazines for the Glock 43X and Glock 48, which make the Glock 43X and Glock 48 match the standard capacity of the Glock 19 in a narrower pistol.
[[File:Glock45custom.pga.jpg|thumb|Glock 45 MOS]]
* '''Glock 45''': The Glock 45 {{Anchor|Glock 45}}, similar to the Glock 19X, incorporates Gen5 features catered for police use. The Glock 45 frame features a Glock 17 full size grip length with a shorter Glock 19 length dust cover and is fitted with a Glock 19 slide with front slide serrations. Unlike the Glock 19X, the Glock 45 features a flared magazine well and can accommodate Gen 5 magazines, because unlike the 19X, the Glock 45 does not have the front lip that blocks the Gen 5 magazine's extended floor plate. The Glock 45 also deletes the lanyard loop found at the back of the grip on the 19X and comes standard with plastic sights instead of the night sights standard on the 19X.<ref>{{Cite web |url=https://www.firearmrack.com/black-glock-19x-glock-45/ |title=A Black 19x? The Glock 45 & Glock 17 MOS Gen5 Leaked |last=Roberts |first=Patrick |date=23 September 2018 |language=en-US |website=The Firearm Rack |access-date=24 September 2018}}</ref>
* '''Glock 46''': The Glock 46 {{Anchor|Glock 46}} is a "compact" version like the Glock 19. This model has a ''rotating barrel breech lock'' system.<ref>{{Cite web |url=http://www.recoilweb.com/brand-new-shiny-glock-46-129623.html |title=Brand New & Shiny: Glock 46 |date=24 September 2017 |language=en-US |website=Recoil |access-date=24 September 2018 |url-status=live |archive-url=https://web.archive.org/web/20180612140402/http://www.recoilweb.com/brand-new-shiny-glock-46-129623.html |archive-date=12 June 2018}}</ref> It had been designed as option to bid for a service pistol, with law enforcement agencies in Germany at state and federal level in mind. The differing breech lock system makes it possible to disassemble the firearm without the need to press the trigger, but only with no projectile chambered. Also, enhanced drop-safety is a must – the model complies with the specifications in the German ''technical guideline'' (Technische Richtlinie "Pistole") for service pistols. Police in [[Saxony-Anhalt]] chose the ''Glock 46 TR'' among three competitors and are to receive up to 8,600 new pistols until 2021 for over 6,400 officers, replacing their ageing ''Pistole 6'' (P6), a [[SIG Sauer P220#P225/P6|SIG Sauer P225]] variant. The state of Saxony-Anhalt is the first introducing a pistol made by Glock as standard issue sidearm into its force.<ref name="Polizeipraxis">{{Cite web |url=https://www.polizeipraxis.de/themen/waffen-und-geraetetechnik/detailansicht-waffen-und-geraetetechnik/artikel/glock-46-tr-fuer-polizei-in-sachsen-anhalt.html |title=GLOCK 46 TR für Polizei in Sachsen-Anhalt |language=de |work=Polizeipraxis |access-date=11 November 2019 |url-status=live |archive-url=https://web.archive.org/web/20191110021259/https://www.polizeipraxis.de/themen/waffen-und-geraetetechnik/detailansicht-waffen-und-geraetetechnik/artikel/glock-46-tr-fuer-polizei-in-sachsen-anhalt.html |archive-date=10 November 2019}}</ref><ref>{{Cite web |url=https://www.mdr.de/sachsen-anhalt/landespolitik/neue-dienstwaffen-polizei-100.html |title=Glock 46: Das sind die neuen Pistolen der Polizei in Sachsen-Anhalt |date=18 September 2019 |language=de |work=MDR |access-date=11 November 2019 |url-status=live |archive-url=https://web.archive.org/web/20191110021724/https://www.mdr.de/sachsen-anhalt/landespolitik/neue-dienstwaffen-polizei-100.html |archive-date=10 November 2019}}</ref><ref name="ESuT1" />
* '''Glock 47''': The Glock 47 {{Anchor|Glock 47}} is a full-sized handgun created for the [[U.S. Customs and Border Protection]], who wanted a version of the Glock 17 that has full parts compatibility with a Glock 19, saving for the slide and barrel. This means that the G47 slide and barrel can be put on a G19 frame to give the G19 a longer slide, barrel, and sight radius (the equivalent of a Glock 49), and the G19 slide and barrel can be put on a G47 frame to create a pistol that functions like a Glock 45. The G47 recoil spring assembly is the same as for the G19. The G47 frame is the same as for the G45 with a shorter dust cover, and the G17-length slide is modified to fill in the gap in a similar manner to the G34. The G47 also comes with MOS cuts and magazines that have the Gen 5 extended base plate.<ref>{{Cite web |url=https://www.thebfirearmblog.com/blog/2019/04/11/glock-g47-cbp/ |title=New CBP GLOCK G47, G19 MOS and G26 |date=11 April 2019 |website=The Firearm Blog |access-date=12 April 2019 |url-status=live |archive-url=https://web.archive.org/web/20190412033821/https://www.thefirearmblog.com/blog/2019/04/11/glock-g47-cbp/ |archive-date=12 April 2019}}</ref> In short, G47 and G19 Gen5/MOS/MOD1/FS have modularity between both pistols.<ref>{{Cite web |url=https://glockcollectorsassociation.org/blogs/news/the-new-g47-for-u-s-customs-and-border-protection.html |title=The new G47 for U.S. Customs and Border Protection |date=31 May 2019 |work=Glock Collectors Association |language=en-US |access-date=31 May 2019 |url-status=live |archive-url=https://web.archive.org/web/20190131040652/https://glockcollectorsassociation.org/blogs/news/the-new-g47-for-u-s-customs-and-border-protection.html |archive-date=31 January 2019}}</ref> Reportedly, the US Secret Service is also using this model, and the G47 Gen 5 MOS is now available to the public.
* '''Glock 48''': The Glock 48 {{Anchor|Glock 48}} is a "slimline" version similar to the subcompact Glock 43 and 43X. All components of the Glock 48 are identical to the Glock 43X except the slide and barrel which are longer. The slides for the Glock 43, Glock 43X, and Glock 48 are functional on any of those three frames. The G48 features a 4.17-inch-long barrel, front slide serrations, a built-in extended beaver tail, a reversible magazine catch (similar to Gen 5 models), GMB rifling (again similar to Gen 5 models), a two-tone finish (silver slide/black receiver), and a magazine capacity of 10 rounds.<ref name="Glock Collectors Association" /> In the E.U., Glock offers the 48 and the 43X with a rail.<ref name="Glock Collectors Association">{{Cite web |url=https://glockcollectorsassociation.org/blogs/news/its-a-european-thing.html |title=It's A European Thing |date=26 July 2019 |work=Glock Collectors Association |language=en-US |access-date=26 July 2019}}</ref> At least three aftermarket sources manufacture 15 round flush-fit magazines for the Glock 43X and Glock 48, which make the Glock 43X and Glock 48 match the standard capacity of the Glock 19 in a narrower pistol.
* '''Glock 49''': In May 2022, a photograph was posted by noted firearms author Larry Vickers, who was asking for more information about the firearm pictured in the photograph. The weapon, marked Glock 49, appeared to be a Glock 47 with a shorter Glock 19 size grip and magazine. The pictured Gen 5 firearm lacked any MOS slide cuts. The handgun in that photo was apparently a sample and the Glock 49 has not been marketed in that form.<ref name="G49? Larry Vickers just posted about this asking for info on this “rare” Glock">{{Cite web |url=https://www.reddit.com/r/Glocks/comments/uimqs2/g49_larry_vickers_just_posted_about_this_asking/?rdt=43831 |title=G49? Larry Vickers just posted about this asking for info on this "rare" Glock |date=May 2022 |language=en-US}}</ref> Later, in November 2023, American firearms distributor TALO Distributors announced the introduction of the Glock 49. Like Larry Vicker's photograph, it used the full-length Glock 47 slide and the Glock 19 frame. It differs from Vickers' photograph in that the slide is cut for the MOS optics option. The model is sold exclusively through TALO Distributors, and Glock does not offer to sell it directly.<ref name="TALO Distributors introduces the Glock 49">{{Cite web |url=https://taloinc.com/news/talo-introduces-the-glock-g49-mos-to-us-market |title=TALO introduces the Glock 49 |date=8 November 2023 |language=en-US}}</ref> The new model is essentially a crossover similar to the Glock 45, but in reverse. Instead of a compact slide mated to a full-grip frame, it is a full-length slide mated to a compact frame.

=== 9×21mm ===
[[File:Glock 17 (9x21mm).jpg|thumb|Rare within the United States, a Glock 17 chambered in 9×21mm.]]

* The [[9×21mm]] pistol cartridge was adopted and commercialized by [[Israel Military Industries]] for those markets (such as in France, Italy, and Mexico){{Efn|Both France and Italy have since dropped this restriction.}} where military service cartridges like the 9×19mm Parabellum are banned for civilian use. Glock produces 9x21mm chambered versions of the Model 17, and other 9mm Parabellum models,<ref>{{Cite web |url=https://www.thefirearmblog.com/blog/2016/03/03/hit-show-glock-43-9x21-mm/ |title=HIT Show: Glock 43 in 9x21 mm |date=3 March 2016 |website=The Firearm Blog |language=en-US |access-date=11 October 2020}}</ref> for these markets. These alternative caliber versions are marked with the same model number as the 9mm Parabellum version {{Efn|This does not include the Glock 49, which is only being marketed to the US.}} only differing in the barrel and caliber marking. Glock does not export or produce the 9×21mm pistols for the United States commercial market. This makes any 9×21mm Glock model a unique and are a highly desirable item for US firearm collectors. A limited number of 9×21mm Glocks have found their way into the US and are mostly held by collectors and gun enthusiasts.<ref>{{Cite web |url=https://www.recoilweb.com/imported-9x21-glock-17-for-sale-on-gunbroker-144513.html |title=Imported 9x21 Glock 17 For Sale On Gunbroker |last=Roberts |first=Patrick |date=3 January 2019 |website=Recoil |language=en-US |access-date=11 October 2020}}</ref>
{{Notelist}}

=== 10mm Auto ===
[[File:GLOCK 29 10mm.jpg|thumb|The subcompact third-generation Glock 29 in 10mm Auto.]]

{{Anchor|Glock 20}}
* '''Glock 20''': The Glock 20, introduced in 1991, was developed for the then-growing law enforcement and security forces market for the [[10mm Auto]]. The pistol handles both full-power and reduced "FBI" loads that have reduced muzzle velocity. Due to the longer cartridge and higher pressures, the pistol is slightly larger than the Glock 17, having a roughly {{convert|2.5|mm|in|abbr=on|1}} greater width and {{convert|7|mm|in|abbr=on|1}} greater length. Though many small parts interchange with the Glock 17, with a close to 50% parts commonality, the major assemblies are scaled-up and do not interchange. The standard magazine capacity of the Glock 20 is 15 rounds, and there are no other factory magazine offerings. In 2009, Glock announced they would offer a {{convert|152|mm|in|abbr=on}} barrel as a drop-in option.<ref name="2009ShotShow" />
** '''Glock 20SF''': The 20SF is a version of the Glock 20 that uses the Short Frame (SF) which is based on the standard G20 frame (same width), but reduces the trigger reach from the back of the grip by {{convert|2.5|mm|in|abbr=on}} and the heel of the pistol is shortened by {{convert|4|mm|in|abbr=on}} so the trigger can be reached and operated better by users with relatively small hands. {{Anchor|Glock 29}}
* '''Glock 29''': The Glock 29 is a 10mm Auto equivalent of the subcompact Glock 26 introduced in 1997 along with the Glock 30 (.45 ACP). The pistol features a {{convert|96|mm|in|abbr=on|1}} barrel and a standard magazine capacity of 10 rounds. Like other subcompact Glock pistols, the Glock 29 functions with the factory magazines from its related full-size model, giving an optional capacity of 15 rounds.
** '''Glock 29SF''': The 29SF version of the Glock 29 uses the SF which is based on the standard G29 frame (same width), but reduces the trigger reach from the back of the grip by {{convert|2.5|mm|in|abbr=on}}. {{Anchor|Glock 40}}
* '''Glock 40''': The Glock 40, introduced in 2015, is a 10mm Auto equivalent of the long-slide Glock 17L. The Glock 40 is only made with the "Gen4" frame and "MOS" (Modular Optic System) configuration.<ref name="Manning2015">{{Cite book |url=https://books.google.com/books?id=P7L4CQAAQBAJ&pg=PA147 |last=Manning |first=Robb |title=Glock Reference Guide |page=147 |date=10 June 2015 |location=Iola, Wisconsin |publisher=F+W Media |isbn=978-1-4402-4339-4}}</ref> The Glock 40 uses the same magazine as the Glock 20.

=== .45 ACP ===
[[File:Glock 36.JPG|thumb|The slim-frame Glock 36 in .45 ACP]]

Glock pistols chambered for the [[.45 ACP]] (and the [[.45 GAP]]) feature [[octagon]]al [[polygonal rifling]] rather than the hexagonal-shaped bores used for models in most other chamberings.<ref name="Glock FAQ">{{Cite web |title=Guide |url=http://www.glockfaq.com/guide.htm |website=Glock FAQ |access-date=26 February 2009 |url-status=dead |archive-url=https://web.archive.org/web/20090214211359/http://glockfaq.com/guide.htm |archive-date=14 February 2009}}</ref> Octagonal rifling provides a better gas seal in relatively large diameter rifled bores, since an octagon resembles a [[circle]] more closely than a hexagon.<ref name="Barrel History" />

* '''Glock 21''': The Glock 21 {{Anchor|Glock 21}} is a .45 ACP version of the Glock 20 designed primarily for the American market.<ref>{{cite book |last=Dougherty |first=Martin J. |date=2005 |title=Small Arms from the Civil War to the Present Day |publisher=Amber Books Ltd |isbn=978-0-760763292}}</ref> Compared to the Glock 20 chambered in 10mm Auto, the slide of the Glock 21 is lighter to compensate for the lower-energy .45 ACP cartridge. The standard Glock 21 magazine is of the single-position-feed, staggered-column type with a capacity of 13 rounds. While there is no other factory magazine, a "+1" base plate is available to make the magazine 14 round.
** '''Glock 21SF''': The 21SF is a version of the Glock 21 that uses a Short Frame lower which is based on the standard G21 frame (same width), but reduces trigger reach from the back of the grip by {{convert|2.5|mm|in|abbr=on}}, and the heel of the pistol is shortened by {{convert|4|mm|in|abbr=on}} so the trigger can be reached and operated better by users with smaller hands.
* '''Glock 30''': The Glock 30 {{Anchor|Glock 30}} is a .45 ACP version of the subcompact Glock 29, with a standard magazine capacity of 10 rounds. The standard magazine includes a "+1" base plate, and can be made into a 9 round magazine by swapping in a flush base plate. The factory magazine from the Glock 21, with a capacity of 13 rounds (14 rounds with the +1 base plate), will function in the Glock 30.
** '''Glock 30SF''': The 30SF is a version of the Glock 30 that uses a Short Frame lower which is based on the standard G30 frame (same width), but reduces trigger reach from the back of the grip by {{convert|2.5|mm|in|abbr=on}}. The G30SF accepts the same double-stack .45ACP magazines as the G30 and G21.<ref name="McNab2015">{{Cite book |url=https://books.google.com/books?id=Vv4_CwAAQBAJ&pg=PT129 |last=McNab |first=Chris |title=Glock: The World's Handgun |page=129 |date=22 December 2015 |publisher=Amber Books Ltd |isbn=978-1-78274-302-6}}</ref>
** '''Glock 30S''': The 30S is a version of the Glock 30 that features a thin slide (same slide as the G36), a Short Frame lower, and the same double stack magazines as the Glock 30 and 21.<ref>{{cite web |url=http://www.thefirearmblog.com/blog/2013/01/08/the-new-glock-30s/ |title=The New Glock 30S |first=Steve |last=Johnson |date=January 8, 2013 |website=The Firearm Blog |url-status=dead |archive-url=https://web.archive.org/web/20130110152240/http://www.thefirearmblog.com/blog/2013/01/08/the-new-glock-30s/ |archive-date=10 January 2013}}</ref> Like the G30, G30S magazines holds 10 rounds.<ref>{{cite web |url=http://www.thefirearmblog.com/blog/2013/01/14/shot-show-sets-the-stage-for-unveiling-of-latest-offering-from-glock/ |title=SHOT Show Sets the Stage for Unveiling of Latest Offering from Glock |first=Phil |last=White |date=14 January 2013 |website=The Firearm Blog |url-status=dead |archive-url=https://web.archive.org/web/20130116123009/http://www.thefirearmblog.com/blog/2013/01/14/shot-show-sets-the-stage-for-unveiling-of-latest-offering-from-glock/ |archive-date=16 January 2013}}</ref>
* '''Glock 36''': The Glock 36 {{Anchor|Glock 36}} is a "slimline" version of the subcompact Glock 30 that features an ultracompact slide and frame and is chambered for the .45 ACP cartridge. The Glock 36 is the first Glock pistol to be manufactured with a single-stack magazine, having a standard capacity of six rounds and being unique to the model. The Glock 36 cannot use factory magazines from its larger relatives due to its single-stack magazine design.
* '''Glock 41''': The Glock 41 {{Anchor|Glock 41}} is a competition version of the Glock 21, much like what the G34 is in relation to the G17; it features a 5.3-inch barrel and an elongated slide. The Glock 41 is only made with the "Gen4" frame.<ref>{{Cite web |url=http://www.thefirearmblog.com/blog/2014/01/05/glock-g41-gen-4/ |title=Glock G41 Gen 4 |date=6 January 2014 |website=The Firearm Blog |access-date=25 December 2014 |url-status=live |archive-url=https://web.archive.org/web/20141225175022/http://www.thefirearmblog.com/blog/2014/01/05/glock-g41-gen-4/ |archive-date=25 December 2014}}</ref>

=== .40 S&W ===
[[File:Glock22inOliveDrab.jpg|thumb|Glock 22 OD in .40 S&W with Coyote Brown frame]]
[[File:Glock35Right.jpg|thumb|The competition-oriented Glock 35 in .40 S&W]]

In 1990, Smith & Wesson and Winchester developed the .40 Smith & Wesson by shortening the 10mm case. This created a round that was more powerful than the 9mm Parabellum but with more manageable recoil. The round was also still operable in the smaller frame size used for Glock 9mm models. As is typical of many pistols chambered in .40 S&W, each of the standard Glock models (22, 23, and 27) may be easily converted to the corresponding [[.357 SIG]] chambering (Glock 31, 32, and 33, respectively) simply by replacing the barrel. No other parts need to be replaced, as the .40 S&W magazines will feed the .357 SIG rounds.

* '''Glock 22''': The Glock 22 {{Anchor|Glock 22}} is a [[.40 S&W]] version of the full-sized Glock 17 introduced in 1990. The pistol uses a modified slide, frame, and barrel to account for the differences in size and power of the .40 S&W cartridge. The standard magazine capacity is 15 rounds. A 10 round version of this magazine is also offered for those markets where the magazine capacity for handguns is restricted. Additionally, the standard magazine is available with a "+1" base plate to make it a 16 round magazine. And, there is a Glock factory 22 round extended magazine offered. One can also swap in the +1 base plate to make that a 23 round magazine. The Glock Model 22 is favored and used by multiple law enforcement agencies around the world, including the [[Baltimore Police Department]], [[Los Angeles Police Department]], [[Miami Police Department]], [[Maryland State Police]], Cumberland County Sheriff's Department (NJ), [[Overland Park Police Department]], [[Kansas City Police Department]], [[Missouri State Highway Patrol]], and [[Alaska State Troopers]] in the United States; the [[New South Wales Police Force#Firearms|NSW Police Force]], [[Queensland Police Service#Equipment|Queensland Police Service]] and the [[Northern Territory Police Force]] in Australia; the [[Edmonton Police Service]], [[Calgary Police Service]], [[Alberta Sheriffs Branch]], [[Winnipeg Police Service]], [[Toronto Police Service]], [[Ottawa Police Service]], and [[British Columbia Sheriff Service]] in Canada; and the [[National Bureau of Investigation (Philippines)]], among others.
* '''Glock 23''': The Glock 23 {{Anchor|Glock 23}} is a .40 S&W version of the compact Glock 19. It is dimensionally identical to the Glock 19, but is slightly heavier and uses a modified slide, frame, .40 S&W barrel, and a standard magazine capacity of 13 rounds. For jurisdictions limiting the magazine capacity of handguns, Glock offers a 10 round version of the standard magazine as well. There is also a factory 14 round version of the standard magazine using the +1 base plate. Finally, any magazine made for the Glock 22 will work in the Glock 23.
* '''Glock 24''': The Glock 24 {{Anchor|Glock 24}} is a .40 S&W long-slide variant of the Glock 22, similar in concept to the Glock 17L. Additionally, a compensated, ported-barrel version designated the 24C was also produced. The Glock 24 was introduced in 1994 and officially dropped from the company's regular product lineup upon the release of the Glock 34 and 35.<ref>{{Cite web |url=http://www.glockfaq.com/models.htm#discontinued |title=Glock Model Info: "Have any models been discontinued?" |website=Glock FAQ |url-status=dead |archive-url=https://web.archive.org/web/20080104024222/http://www.glockfaq.com/models.htm#discontinued |archive-date=4 January 2008}}</ref> The Glock 24 can use any magazine made for the Glock 22.
* '''Glock 27''': The Glock 27 {{Anchor|Glock 27}} is a .40 S&W version of the subcompact Glock 26, with a standard magazine capacity of 9 rounds. Glock also offers a 10 round version of this magazine with the +1 base plate. The factory magazines from the larger Glock 22 and 23 will function in the Glock 27, increasing capacity to 13, 14, 15, 16 or 22 rounds. Spacers are available that fit on these larger-capacity magazines themselves; they have the effect of "extending" the magazine well of the pistol, thereby improving the ergonomic feel of the pistol when the longer magazines are inserted.
* '''Glock 35''': The Glock 35 {{Anchor|Glock 35}} is a .40 S&W version of the competition Glock 34. The Glock Model 35 was the service pistol for the [[Kentucky State Police]], but by the summer of 2017, they had reverted from the Glock 35 back to 9mm weapons because of penetration improvements in the 9mm bullets, noting some officers had never been able to make the switch from 9mm to .40 S&W in the first place due to their struggles in mastering the higher caliber.<ref>{{Cite web |url=https://www.klemagazine.com/home/2017/7/25/better-bullets |title=Better Bullets |last=Moore |first=Michael |date=July 2017 |website=Kentucky Law Enforcement Magazine |url-status=live |archive-url=https://web.archive.org/web/20181027061606/https://www.klemagazine.com/home/2017/7/25/better-bullets |archive-date=27 October 2018}}</ref> The Glock 35 can use any magazine made for the Glock 22.

=== .380 ACP ===
[[File:Glock 42 pistol with ammo recovered by DC Metro Police.png|thumb|The Glock 42, chambered in [[.380 ACP]], is currently the smallest Glock handgun produced as of 2023. The Glock 42 was also the first Glock to be entirely manufactured domestically in the United States—due to import-export restrictions from Austria to the United States market.]]
The first two [[.380 ACP]] models (Glock 25 and 28) were released in 1995 to provide a less powerful alternative to the 9mm Parabellum and 9x21mm, and primarily intended for markets (such as Brazil) that prohibit civilian ownership of firearms chambered in more powerful calibers.<ref>{{Cite web |url=http://www.recguns.com/Sources/IIG6.html |title=ATF Form 4590 |date=8 December 1996 |website=Recguns.com |access-date=29 June 2010 |url-status=dead |archive-url=https://web.archive.org/web/20101127070512/http://recguns.com/Sources/IIG6.html |archive-date=27 November 2010}}</ref> Made in Austria, they are legally prohibited from being imported for civilians in the United States, lacking sufficient points to meet the import restrictions.<ref>{{Cite web |url=http://universityofguns.com/the-unobtainable-glock-25-and-glock-28/ |title=The Unobtainable Glock 25 and Glock 28—NGOA Buyers Club |date=16 December 2013 |website=University of Guns |access-date=16 April 2018 |url-status=live |archive-url=https://web.archive.org/web/20180416134803/http://universityofguns.com/the-unobtainable-glock-25-and-glock-28/ |archive-date=16 April 2018}}</ref> Recently, a limited run of the Glock 28 were manufactured in Glock's US plant for sale in the US. The Glock 25 and 28 are also prohibited from ownership in Canada due to not meeting minimum barrel length requirements for handguns.

Due to the relatively low [[bolt thrust]] of the .380 ACP cartridge, the locked-breech design of the Glock 19 and Glock 26 was minimally modified for the Glock 25 and Glock 28 to implement unlocked breech operation. It operates via [[Blowback (arms)|straight blowback]] of the slide. This required modification of the locking surfaces on the barrel, as well as a redesign of the former locking block. Unusual for a blowback design, the barrel is not fixed to the frame. It moves rearward in recoil until it is tilted below the slide, similar to the standard locked-breech system. The reduced size and mass of the Glock 42 allowed for the return to the Glock-standard locked-breech design.
* '''Glock 25''': The Glock 25 {{Anchor|Glock 25}}, introduced in 1995, is a blowback derivative of the compact ({{convert|102|mm|abbr=on|1}} barrel) Glock 19. The magazine capacity is 15 rounds. Standard fixed sight elevation is 6.9&nbsp;mm, unlike the 6.5&nbsp;mm elevation used for the 9×19mm models.<ref>{{Cite web |url=https://www.militaryfactory.com/smallarms/detail.asp?smallarms_id=337 |title=Glock 25 Semi-Automatic Pistol—Austria |website=Military Factory |language=en-US |access-date=21 February 2018 |url-status=live |archive-url=https://web.archive.org/web/20180221161648/https://www.militaryfactory.com/smallarms/detail.asp?smallarms_id=337 |archive-date=21 February 2018}}</ref>
* '''Glock 28''': The Glock 28 {{Anchor|Glock 28}}, introduced in 1997, is a blowback derivative of the subcompact ({{convert|87|mm|abbr=on|1}} barrel) Glock 26. The standard magazine capacity is 10 rounds, but the 15-round Glock 25 magazine will function in the Glock{{nbsp}}28. Standard fixed-sight elevation is 6.9&nbsp;mm, unlike the 6.5&nbsp;mm elevation used for the 9×19mm Parabellum models.
* '''Glock 42''': The Glock 42 {{Anchor|Glock 42}}, introduced in 2014, is a locked-breech "slimline" ({{convert|83|mm|abbr=on|1}} barrel) design. The single-stack magazine has a capacity of six rounds. It is Glock's smallest model ever made and is manufactured in the United States, which unlike the Glock{{nbsp}}25 and 28, allows it to be sold in the domestic USA market.

=== .357 SIG ===
[[File:Glock33 big.jpg|thumb|The subcompact Glock 33 in .357 SIG]]

In 1994, SIG and Federal developed the .357 SIG to match the ballistics of typical .357 Magnum loads. This was done by necking down a shortened 10mm case to .357, so it was easy for Glock to alter their .40 Smith & Wesson models to the new caliber. As is typical of pistols chambered in .357 SIG, each of the standard Glock models (31, 32, and 33) may be easily converted to the corresponding .40 S&W chambering (Glock 22, 23, and 27, respectively) simply by replacing the barrel. No other parts need to be replaced, as the .357 SIG magazines will feed the .40 S&W round. Though marked as a different caliber, the .357 SIG magazines are the same as for the .40 S&W models and interchangeable.

* '''Glock 31''': The Glock 31 {{Anchor|Glock 31}} is a [[.357 SIG]] variant of the full-sized Glock 22. The standard magazine capacity of the Glock 31 is 15 rounds. It can accept magazines intended for the Glock 22 as well.
* '''Glock 32''': The Glock 32 {{Anchor|Glock 32}} is a .357 SIG variant of the compact Glock 23. The standard magazine capacity of the Glock 32 is 13 rounds. It can accept magazines intended for the Glock 31, Glock 22, or Glock 23 as well.
* '''Glock 33''': The Glock 33 {{Anchor|Glock 33}} is a .357 SIG variant of the subcompact Glock 27. The standard magazine capacity of the Glock 33 is 9 rounds. It can also accept magazines intended for the Glock 32, Glock 31, Glock 22, Glock 23, and Glock 27.

=== .45 GAP ===
Glock pistols chambered for the .45 GAP (and the .45 ACP) feature octagonal polygonal rifling rather than the hexagonal-shaped bores used for models in most other chamberings.<ref name="Glock FAQ" /> Octagonal rifling provides a better gas seal in relatively large diameter rifled bores, since an octagon will have shorter sides and shallower angles than a hexagon.<ref name="Barrel History" />

* '''Glock 37''': The Glock 37 {{Anchor|Glock 37}} is a .45 GAP version of the Glock 17. It uses a wider, beveled slide, larger barrel, and different magazine, but is otherwise similar to the Glock 17. The Glock 37 first appeared in 2003. It was designed to offer ballistic performance comparable with the .45 ACP in the frame size of the Glock 17. The concern with the size of the Glock 20/21 has been addressed by the Glock 36, 21SF, and 30SF, all of which featured reduced-size frames. The standard magazine capacity of the Glock 37 is 10 rounds.
* '''Glock 38''': The Glock 38 {{Anchor|Glock 38}} is a .45 GAP version of the compact Glock 19.<ref>{{Cite magazine |url=http://www.handgunsmag.com/featured_handguns/glock38_112805/index.html |title=The Glock Model 38 |last=James |first=Frank W. |magazine=Handguns |access-date=24 July 2009 |url-status=dead |archive-url=https://web.archive.org/web/20090223104347/http://www.handgunsmag.com/featured_handguns/glock38_112805/index.html |archive-date=23 February 2009}}</ref> The standard magazine capacity of the Glock 38 is 8 rounds, but it can use the 10 round magazines of the Glock 37.
* '''Glock 39''': The Glock 39 {{Anchor|Glock 39}} is a .45 GAP version of the subcompact Glock 26. The standard magazine capacity of the Glock 39 is 6 rounds, but it can use the 8 and 10 round  magazines of the Glock 37 and Glock 38.

=== .22 LR ===
* '''Glock 44''': The Glock 44{{Anchor|Glock 44}} is a [[.22 LR]] (Long Rifle) rimfire model based on the Glock 19. While the Glock 44 is similar in size as the Glock 19, the Glock 44 has a magazine capacity of 10 rounds and uses a simple blowback mechanism instead of a locked breech mechanism used on nearly all other Glock pistols.<ref>{{Cite web |url=https://glockcollectorsassociation.org/blogs/news/glock-44-vs-glock-19-gen5.html |title=GLOCK's Big Reveal: G44 .22 LR |date=10 December 2019 |work=Glock Collectors Association |language=en-US |access-date=10 December 2019 |url-status=dead |archive-url=https://web.archive.org/web/20191220212940/https://glockcollectorsassociation.org/blogs/news/glock-44-vs-glock-19-gen5.html |archive-date=20 December 2019}}</ref> In addition, the Glock 44 is lighter than the G19, weighing in at just 12 ounces, and it retains Glock's popular polygonal rifling, which has been tested by Glock to work with lead .22 bullets. It uses a steel/polymer composite slide due to the lower slide mass required to function with the less powerful cartridge.<ref>{{Cite web |url=https://gundigest.com/handguns/glock-44-austrian-company-moves-into-rimfire-market |title=Glock 44: Austrian Company Moves into Rimfire Market |date=10 December 2019 |work=Gun Digest |language=en-US |access-date=10 December 2019}}</ref>

== Production in other countries ==
[[File:Iraqi Police fire Glock 9mm handguns.jpg|thumb|right|200px|Iraqi police firing 9 mm Glock handguns at a firing range]]
Aside from the original Austrian company, Glock pistols are manufactured by the Glock Inc. subsidiary division located in the United States. Those batches are identical to the Austrian-made ones, but they are marked as "USA", instead of "AUSTRIA", on the slide. As of 2015, there were plans to assemble Glock 17 pistols at army workshops in [[Uruguay]] to fulfill the needs of the national military services and law enforcement organizations.<ref>{{Cite web |url=http://www.forecastinternational.com/news/index.cfm?l3=30112&recno=232431 |title=Glock Plans to Open Pistol Production Plant in Uruguay |date=14 May 2015 |website=Forecast International |access-date=6 November 2016 |url-status=live |archive-url=https://web.archive.org/web/20161107011430/http://www.forecastinternational.com/news/index.cfm?l3=30112&recno=232431 |archive-date=7 November 2016}}</ref>

Russian firms such as Skat,<ref>{{Cite web |url=https://www.thefirearmblog.com/blog/2012/03/05/skat-gm-100-glock-clone-in-9mm-and-22lr/ |title=Skat GM-100 Glock Clone in 9mm and .22LR |date=5 March 2012 |website=The Firearm Blog}}</ref><ref>{{Cite web |url=http://www.nfbv.ru/goods/catalogue-pistols/catalogue-copy_4.html |title=Пистолет спортивный GM-100 |trans-title=Sports pistol GM-100 |website=National Federation of Benchrest and Varminting |language=ru |access-date=29 March 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150402092523/http://www.nfbv.ru/goods/catalogue-pistols/catalogue-copy_4.html |archive-date=2 April 2015}}</ref> [[ORSIS]],<ref>{{Cite web |url=http://www.orsis.com/about/news/78879/ |title=Glock – собранно в России |trans-title=Glock – assembled in Russia |language=ru |date=17 July 2012 |website=ORSIS |access-date=28 February 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150402095642/http://www.orsis.com/about/news/78879/ |archive-date=2 April 2015}}</ref> and [[Izhmash]]<ref>{{Cite web |url=http://www.thefirearmblog.com/blog/2013/09/13/kalashnikov-produce-steyr-rifles-glock-pistols/ |title=Kalashnikov To Produce Steyr Rifles, Glock Pistols |date=13 September 2013 |website=The Firearm Blog |access-date=6 November 2016 |url-status=live |archive-url=https://web.archive.org/web/20161106185753/http://www.thefirearmblog.com/blog/2013/09/13/kalashnikov-produce-steyr-rifles-glock-pistols/ |archive-date=6 November 2016}}</ref> assemble three models of Glock pistols locally: the Glock 17, 34, and 35.

== Clones ==
Third party frames and slides for Glock pistols began to appear in the early 2000s. This has led to "Glock" becoming a generic term encompassing pistols not made by Glock Ges.m.b.H. especially as expiring patents allowed for complete Glock clones to be made.<ref>{{cite web |url=https://www.shootingillustrated.com/content/the-history-behind-glock-clone-pistols/ |title=The History Behind Glock Clone Pistols |last1=Keel |first1=Tamara |date=July 31, 2021 |website=Shooting Illustrated |access-date=5 September 2022}}</ref> As of 2019 a large number of American companies produced Glock clones.<ref>{{cite web |url=https://www.recoilweb.com/shot-2019-attack-of-the-glock-clones-145232.html |title=SHOT 2019, Attack Of The Glock Clones? |last1=Roberts |first1=Patrick |date=21 January 2019 |website=Recoil |access-date=3 September 2022}}</ref>

There are three sidearms made by Iranian [[Defense Industries Organization|DIO]]'s Shahid Kaveh Industry Complex which they call Ra'ad (has a safety selector, possibly an unlicensed copy of Glock 17), Glock 19 and Kaveh-17 (probably an improved Ra'ad, a variant of Glock 17S), which all of them are unlicensed clones of Glock pistols.<ref>{{Cite web |url=http://theiranproject.com/blog/2014/10/27/iran-stands-among-10-polymeric-weapons-manufacturers/ |title=Iran stands among 10 polymeric weapons manufacturers |date=27 October 2014 |website=The Iran Project |access-date=18 January 2016 |url-status=live |archive-url=https://web.archive.org/web/20160410075938/http://theiranproject.com/blog/2014/10/27/iran-stands-among-10-polymeric-weapons-manufacturers/ |archive-date=10 April 2016}}</ref> It is not known if they could make their way to [[Iranian military]] and replace the Browning Hi-Power, M1911 and SIG P226 pistols and they were possibly some prototypes and have never gone on mass production.<ref>{{Cite web |url=http://www.mashreghnews.ir/fa/news/497626/%DA%AF%D9%84%D8%A7%DA%A9-%D9%82%D8%A7%D8%AA%D9%84-%D8%AF%DB%8C%D8%B1%D9%88%D8%B2-%D8%AF%D8%A7%D9%86%D8%B4%D9%85%D9%86%D8%AF-%D8%A7%DB%8C%D8%B1%D8%A7%D9%86%DB%8C-%DA%A9%D9%87-%D8%AA%D8%A8%D8%AF%DB%8C%D9%84-%D8%A8%D9%87-%D8%AF%D8%B3%D8%AA%D8%A7%D9%88%D8%B1%D8%AF-%D8%AC%D8%AF%DB%8C%D8%AF-%D8%AF%D9%81%D8%A7%D8%B9%DB%8C-%D8%B4%D8%AF-%D8%B9%DA%A9%D8%B3 |title=گلاک؛ قاتل دیروز دانشمند ایرانی که تبدیل به دستاورد جدید دفاعی شد |trans-title='Glock': yesterday's killer of Iranian scientist turned into new defense achievement |date=1 November 2008 |website=[[Mashregh News]] |language=fa |url-status=live |archive-url=https://web.archive.org/web/20151123045038/http://www.mashreghnews.ir/fa/news/497626/%DA%AF%D9%84%D8%A7%DA%A9-%D9%82%D8%A7%D8%AA%D9%84-%D8%AF%DB%8C%D8%B1%D9%88%D8%B2-%D8%AF%D8%A7%D9%86%D8%B4%D9%85%D9%86%D8%AF-%D8%A7%DB%8C%D8%B1%D8%A7%D9%86%DB%8C-%DA%A9%D9%87-%D8%AA%D8%A8%D8%AF%DB%8C%D9%84-%D8%A8%D9%87-%D8%AF%D8%B3%D8%AA%D8%A7%D9%88%D8%B1%D8%AF-%D8%AC%D8%AF%DB%8C%D8%AF-%D8%AF%D9%81%D8%A7%D8%B9%DB%8C-%D8%B4%D8%AF-%D8%B9%DA%A9%D8%B3 |archive-date=23 November 2015}}</ref>

Turkish company Akdal Arms produces a pistol named the [[Ghost TR01]], which is heavily influenced by Glock pistols in its design.<ref>{{Cite web |url=http://world.guns.ru/handguns/hg/tr/akdal-ghost-e.html |title=Akdal Ghost |date=22 October 2010 |website=Modern Firearms |access-date=25 December 2014 |url-status=live |archive-url=https://web.archive.org/web/20141225041740/http://world.guns.ru/handguns/hg/tr/akdal-ghost-e.html |archive-date=25 December 2014}}</ref>

The [[Tatmadaw]] of [[Myanmar]] have adopted a clone of the Glock 17 known as the MA5 MK II, which was first reported in 2018.<ref name="FBM">{{Cite web |url=https://www.thefirearmblog.com/blog/2018/07/20/ma5-the-burmese-tatmadaws-production-glock/ |title=MA5 MK II: The Burmese Tatmadaw's Production Glock Handgun |date=23 July 2018 |website=The Firearm Blog |access-date=29 July 2018 |url-status=live |archive-url=https://web.archive.org/web/20180729112001/https://www.thefirearmblog.com/blog/2018/07/20/ma5-the-burmese-tatmadaws-production-glock/ |archive-date=29 July 2018}}</ref> They are currently being manufactured and adopted for Myanmar's special forces units.<ref>{{Cite web |url=http://www.military-today.com/firearms/ma5_mk2.htm |title=MA-5 Mk.2 Pistol |website=Military-Today.com |access-date=28 April 2019 |url-status=live |archive-url=https://web.archive.org/web/20190428072819/http://www.military-today.com/firearms/ma5_mk2.htm |archive-date=28 April 2019}}</ref>

The [[Armaments Bureau#205th Arsenal|205th Arsenal]] in Taiwan produces a copy of the Glock 19, named the T97 pistol. The Taiwan-made Glocks were made to replace the [[Smith & Wesson Model 5906]] used by the [[National Police Agency (Republic of China)|Taiwan police]], but it ultimately did not enter service.

In 2017, it was reported that [[Norinco]] was able to make a clone of the Glock 17<ref>{{Cite web |url=https://www.thefirearmblog.com/blog/2017/12/22/chinese-norinco-glock-clone/ |title=Chinese Norinco Glock Clone |date=22 December 2017 |website=The Firearm Blog |language=en-US |access-date=20 February 2021}}</ref> known as the NP-7 (or NP7).<ref>{{Cite web |url=https://mil.news.sina.com.cn/jssd/2018-11-15/doc-ihmutuec0366431.shtml |title=中国版格洛克手枪现身 既然能国产为何我军却不装备 |trans-title=The Chinese version of the Glock pistol appeared. Since it can be made in China, why is our army not equipped with it?? |language=zh |website=[[Sina Corporation|Sina News]] |access-date=20 February 2021}}</ref> The pistol was subcontracted to Hunan Ordnance Industry Group through the Hunan Ordnance and Light Weapons Research Institute.<ref>{{Cite web |url=http://www.hunan.gov.cn/hnszf/hnyw/jdt2/201811/t20181115_5185252.html |title=湖南兵器的"十八般武器" |trans-title="Eighteen Weapons" of Hunan Weapons |language=zh |date=2018-11-15 |website=Hunan Provincial People's Government Portal}}</ref><ref>{{Cite web |url=https://chumo.me/article-10872-1.html |title=国产格洛克手枪，性能优异却不内销-军事-初默网 |trans-title=Domestic Glock pistol, excellent performance but not domestic sales |language=zh |date=2019-08-06 |website=Chumo |url-status=dead |archive-url=https://web.archive.org/web/20210225052309/https://chumo.me/article-10872-1.html |archive-date=25 February 2021}}</ref> Its features appear to be influenced by the fourth gen Glock 17.<ref name=":1" /> The NP7 is being marketed for export sales.<ref name=":1">{{Cite web |url=http://gearkr.com/?p=134576 |title=国产GLOCK？9mm狙击枪？GearKr带你看2018北京国际警博会的武器枪械 |trans-title=Domestic GLOCK? 9mm sniper rifle? GearKr shows you the weapons and firearms of the 2018 Beijing International Police Expo |language=zh |website=GearKr |date=2018 |url-status=dead |archive-url=https://web.archive.org/web/20201028133738/http://gearkr.com/?p=134576 |archive-date=28 October 2020}}</ref>

Unlicensed Glock clones are made in Pakistan's Khyber region,<ref>{{Cite web |url=https://www.thefirearmblog.com/blog/2018/04/05/the-glock-revolution-comes-to-peshawar-in-select-fire/ |title=The Glock Revolution Comes to Peshawar in Select-Fire |date=5 April 2018 |website=The Firearm Blog}}</ref> which were first reported in 2018.<ref>{{cite web |url=https://silahreport.com/2018/03/17/a-made-in-pakistan-glock-17/ |title=Glock 17 Copy Made in Pakistan |website=Silah Report |access-date=15 May 2022 |url-status=dead |archive-url=https://web.archive.org/web/20200223063136/https://silahreport.com/2018/03/17/a-made-in-pakistan-glock-17/ |archive-date=23 February 2020}}</ref><ref>{{Cite web |url=https://nationalinterest.org/blog/reboot/pro-tip-dont-buy-see-through-glock-pakistan-164132 |title=Pro Tip: Don't Buy a 'See Through' Glock from Pakistan |first=Charlie |last=Gao |date=5 July 2020 |website=The National Interest}}</ref>

==Users==
[[File:Glock Users.png|thumb|A map with nations who use Glock models in blue|246x246px]]
<!--READ FIRST: The users list is a list of countries, armed forces, or other groups using the weapon. An individual user does not qualify for inclusion in the list. This section is for cited entries only. Please do not add entries into this list without a citation from a reliable source. All entries without a citation will be removed. Thank you.-->

{| class="wikitable" style="font-size: 95%;"
|-
! width="172" | Country
! Organization
! width="185" | Model
|-
| rowspan="3" |{{Flag|Argentina}}
|''Agrupacion de Fuerzas de Operaciones Especiales''<ref>{{Cite web |url=https://www.thefirearmblog.com/blog/2021/02/12/new-glock-bt-submachine-guns-for-argentina/ |title=New Glock Pistols and B&T Submachine Guns for Argentina's Special Forces |last=Moss |first=Matthew |date=12 February 2021 |website=The Firearm Blog}}</ref>
| style="text-align:center;"| ''17'', ''19X''
|-
|Brigada Especial Operativa Halcón<ref name=":0">{{Cite web |date=2016-11-24 |title=wiw_sa_argentina - worldinventory |url=https://sites.google.com/site/worldinventory/wiw_sa_argentina |archive-url=https://web.archive.org/web/20161124203421/https://sites.google.com/site/worldinventory/wiw_sa_argentina |url-status=dead |archive-date=2016-11-24 |access-date=2023-02-28 }}</ref>
| style="text-align:center;"| ''17'', ''18''
|-
|Coast guard, GEOF, Buenos Aires province police
| style="text-align:center;"| ''17''<ref name=":0" />
|-
|{{Flag|Armenia}}
|[[Police of Armenia|National Police of Armenia]]<ref>{{Cite web |url=https://www.edupolice.am/news/view/parekvarkaxax040222.html |title=Վարժախաղ՝ պարեկների մասնակցությամբ |trans-title=Exercise game with patrols |language=hy |date=4 February 2022 |website=RA Police Training Complex |access-date=2023-01-03}}</ref>
| style="text-align:center;"| ''17'', ''18''
|-
| rowspan="2" |{{flag|Australia}}
| [[Royal Australian Air Force]]<ref name="Contact">{{Cite magazine |url=http://www.contactairlandandsea.com/adf_weapons_pt1.pdf |title=ADF Weapons Part 1 |first=Brian |last=Hartigan |access-date=5 June 2019 |magazine=Contact Air Land & Sea |url-status=live |archive-url=https://web.archive.org/web/20170610191607/http://www.contactairlandandsea.com/adf_weapons_pt1.pdf |archive-date=10 June 2017}}</ref>
| style="text-align:center;"| ''19'', ''26''
|-
|[[Australian Federal Police]],<ref>{{Cite web |url=https://www.policenews.act.gov.au/news/90-years-act-policing/then-and-now-firearms |title=Then and Now: Firearms |date=26 September 2017 |website=Australian Federal Police |access-date=19 November 2022}}</ref> [[Australian Border Force]], [[New South Wales Police Force]],<ref>{{Cite web |url=http://www.policensw.com/info/gen/e5.html |title=The GLOCK 22 Pistol |website=Police NSW |access-date=29 June 2010 |url-status=dead |archive-url=https://web.archive.org/web/20101126115853/http://policensw.com/info/gen/e5.html |archive-date=26 November 2010}}</ref> [[Queensland Police Service]],<ref>{{Cite web |url=https://www.perthnow.com.au/news/wa/wa-police-need-semi-automatic-rifles-to-combat-active-shooters-police-union-tells-commissioner-ng-e1ac6683f18b2e80139dbeff1d5740b5 |title=WA Police need semi-automatic rifles to combat active shooters, police union tells Commissioner |date=March 6, 2016 |website=Perth Now}}</ref> [[Western Australia Police Force]],<ref>{{Cite web |url=https://www.perthnow.com.au/news/wa/wa-police-need-semi-automatic-rifles-to-combat-active-shooters-police-union-tells-commissioner-ng-e1ac6683f18b2e80139dbeff1d5740b5 |title=Cops need firepower for shooting attacks |date=2016-03-05 |website=PerthNow |language=en |access-date=2022-07-11}}</ref> [[Northern Territory Police Force]],<ref>{{Cite web |url=http://ntpolicemuseum.com.au/home/our-rich-history/equipment-1/operational-safety-equipment-1/firearms/glock |title=Glock |website=NT Police Museum |access-date=2022-07-11}}</ref> [[Tasmania Police]]<ref>{{Cite web |url=https://pat.asn.au/glock-pistols-are-for-police-officers-safety/ |title=Glock pistols are for police officers' safety |last=Newell |first=Deanne |date=2020-06-19 |website=Police Association of Tasmania |language=en-AU |access-date=2022-07-11}}</ref>
| style="text-align:center;" | ''17'', ''19'', ''22'', ''23'', ''26'', ''27''
|-
| rowspan="2" |{{flag|Austria}}
| [[Austrian Armed Forces]] (incl. [[Military Police (Austria)|Militärpolizei]]){{sfnp|Kasler|1992|p=79}}<ref name="valpolini2009">{{Cite web |url=http://www.armadainternational.com/09-6/article-full_09_6_Combat_Pistols.pdf |title=There are Two Types of Men in this World... |last=Valpolini |first=Paolo |date=June 2009 |website=Armada International |access-date=13 February 2010 |url-status=dead |archive-url=https://web.archive.org/web/20160313041809/http://armadainternational.com/09-6/article-full_09_6_combat_pistols.pdf |archive-date=13 March 2016}}</ref><ref>{{cite web |url=http://www.bundesheer.at/truppendienst/ausgaben/artikel.php?id=1641 |title=Pistolenbewaffnung des Bundesheeres - 1955 bis heute |trans-title=Armed Forces Pistols - 1955 to the Present |language=de |website=[[Ministry of Defence (Austria)|Bundesministerium für Landesverteidigung]] |url-status=live |archive-url=https://web.archive.org/web/20160914184846/http://www.bundesheer.at/truppendienst/ausgaben/artikel.php?id=1641 |archive-date=2016-09-14}}</ref>
| style="text-align:center;" | ''17'' (''Pistole 80''), ''18C'', ''26'', ''21''
|-
| [[Federal Police (Austria)|Bundespolizei]],<ref>{{cite magazine |url=https://www.bmi.gv.at/magazinfiles/2009/01_02/files/dienstwaffen.pdf |title=Verhältnismäßiges Einschreiten: Die Bundespolizei verfügt über eine Reihe von Dienstwaffen |trans-title=Appropriate intervention: The Federal Police have a number of service weapons at their disposal |language=de |date=2009 |magazine=Öffentliche Sicherheit |publisher=[[Ministry of the Interior (Austria)|Bundesministerium für Inneres]]}}</ref> [[EKO Cobra]] also G18 (Min. of Interior); [[Justizwache]] (Min. of Justice)<ref>{{cite web |url=https://www.parlament.gv.at/PAKT/VHG/XXIII/AB/AB_04022/fname_111904.pdf |title=Anfragebeantwortung: "Entwaffnung von Justizwachebeamten" |trans-title=Query response: "Disarming of prison guards" |language=de |author=[[Ministry of Justice (Austria)|Die Bundesministerin für Justiz]] |date=5 June 2008 |website=[[Austrian Parliament|Parlament Österreich]]}}</ref>
| style="text-align:center;"| ''17'', ''18'', ''19''
|-
| {{flag|Azerbaijan}}
| For use with Special Military Services, 160 Glock pistols purchased in 2013.<ref>{{Cite web |url=http://en.apa.az/news/204647 |title=Azerbaijan purchases 160 Glock pistols from Austria |date=20 December 2013 |website=[[Azerbaijani Press Agency]] |access-date=25 December 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141225173855/http://en.apa.az/news/204647 |archive-date=25 December 2014}}</ref>
| style="text-align:center;"| ''19''
|-
| rowspan="2" |{{flag|Bangladesh}}
| Ordered by [[Bangladesh Army]]<ref>{{Cite web |url=https://dgdp.gov.bd/dgdp/AP_TEN/doc/4739.pdf |title=Tender Notice P.4 SEC |date=18 February 2021 |website=[[Directorate General of Defence Purchase (Bangladesh)|Directorate General of Defence Purchase]] |access-date=14 March 2021}}</ref>
| style="text-align:center;" | ''26''
|-
|  Used by [[SWAT (Bangladesh)|SWAT]] of [[Bangladesh Police]]<ref>{{Cite news |url=http://archive.prothom-alo.com/detail/news/39186 |last=Hassan |first=Kamrul |date=20 December 2008 |title=জঙ্গি-সন্ত্রাস দমনে র‌্যাব-পুলিশকে অস্ত্র ও প্রশিক্ষণ দিচ্ছে যুক্তরাষ্ট্র |trans-title=The United States is providing weapons and training to RAB and Police to counter militant-terrorism |language=bn |newspaper=[[Prothom Alo]] |access-date=16 August 2019 |url-status=dead |archive-url=https://web.archive.org/web/20190710102804/http://archive.prothom-alo.com/detail/news/39186 |archive-date=10 July 2019}}</ref>
| style="text-align:center;" | ''17''
|-
| rowspan="8" |{{flag|Brazil}}
|[[Federal Police of Brazil|Polícia Federal]] - Federal Police<ref>{{Cite web |url=http://sindipoldf.org.br/noticias-sindipoldf/dpf-define-glock-9-x-19-mm-como-armamento-padrao-da-policia-federal-a-previsao-e-que-sejam-adquiridas-mais-de-7-mil-armas-ainda-este-ano/ |title=DPF define Glock 9x19mm como armamento padrão da Polícia Federal – A previsão é que sejam adquiridas mais de 7 mil armas ainda este ano |trans-title=DPF defines Glock 9x19mm as standard weapon of the Federal Police – The forecast is that more than 7 thousand weapons will be purchased this year |language=pt-BR |website=SINDIPOL/DF |access-date=22 June 2021}}</ref>
| style="text-align:center;"| ''17'', ''19'', ''26''
|-
|[[Federal Highway Police (Brazil)|Polícia Rodoviária Federal]] – Federal Highway Police<ref>{{Cite web |url=https://www.portaldotiro.com/industria/glock/435-policia-rodoviaria-federal-prf-teste-aprovacao-e-aquisicao-das-pistolas-glock |title=Polícia Rodoviária Federal (PRF) – Teste, Aprovação e Aquisição das Pistolas Glock |trans-title=Federal Highway Police (PRF) – Testing, Approval and Acquisition of Glock Pistols |last=Passos |first=Anny |date=23 July 2018 |website=Portal do Tiro |language=pt-BR |access-date=22 December 2018 |url-status=live |archive-url=https://web.archive.org/web/20181222082212/https://www.portaldotiro.com/industria/glock/435-policia-rodoviaria-federal-prf-teste-aprovacao-e-aquisicao-das-pistolas-glock |archive-date=22 December 2018}}</ref>
| style="text-align:center;" | ''17'', ''17 MOS'', ''26''
|-
|[[Military Police of São Paulo State|Polícia Militar do Estado de São Paulo]] - Military Police of São Paulo State<ref>{{Cite web |url=https://g1.globo.com/sp/sao-paulo/noticia/2019/08/22/glock-vence-licitacao-internacional-e-vendera-40-mil-pistolas-para-a-pm-de-sp.ghtml |title=Glock vence licitação e venderá 40 mil pistolas para a PM de SP |trans-title=Glock wins bid and will sell 40,000 pistols to the PM of SP |date=2019-08-22 |website=[[G1 (website)|G1]] |language=pt-BR |access-date=22 October 2020}}</ref>
| style="text-align:center;" | ''22''
|-
|Polícia Civil do Estado de São Paulo - Civil Police of São Paulo State<ref>{{Cite web |url=https://www.policiacivil.sp.gov.br/portal/faces/pages_home/noticias/noticiasDetalhes?rascunhoNoticia=0&collectionId=358412565221048729&contentId=UCM_057062&_afrLoop=2979258346522898&_afrWindowMode=0&_afrWindowId=null#!@@?_afrWindowId=null&collectionId=358412565221048729&_afrLoop=2979258346522898&contentId=UCM_057062&rascunhoNoticia=0&_afrWindowMode=0&_adf.ctrl-state=9khrzga6u_4 |title=Polícia Civil recebe mais de 4 mil pistolas semiautomáticas |trans-title=Civil Police receives more than 4,000 semi-automatic pistols |date=6 February 2021 |language=pt-BR |website=Polícia Civil do Estado de São Paulo |access-date=14 July 2021}}</ref>
| style="text-align:center;" | ''22''
|-
|[[Military Police of Rio de Janeiro State|Polícia Militar do Estado do Rio de Janeiro]] - Military Police of Rio de Janeiro State<ref>{{Cite web |url=http://www.cml.eb.mil.br/ultimas-noticias/1870-entregas-de-pistolas-glock-40.html |title=Entrega de pistolas Glock .40 |trans-title=Delivery of Glock .40 pistols |website=Comando Militar do Leste |language=pt-BR |access-date=22 October 2020 |url-status=dead |archive-url=https://web.archive.org/web/20190929225243/http://www.cml.eb.mil.br/ultimas-noticias/1870-entregas-de-pistolas-glock-40.html |archive-date=2019-09-29}}</ref>
| style="text-align:center;"| ''23''
|-
|[[Military Police of Espírito Santo State|Polícia Militar do Estado do Espírito Santo]] - Military Police of Espírito Santo State<ref>{{Cite web |url=https://pm.es.gov.br/Notícia/policia-militar-recebe-2-905-pistolas-glock |title=Polícia Militar recebe 2.905 pistolas Glock |trans-title=Military Police receives 2,905 Glock pistols |date=5 June 2019 |website=Polícia Militar do Espírito Santo |language=pt-BR |access-date=22 October 2020}}</ref>
| style="text-align:center;"| ''17'', ''22''
|-
|[[Military Police of Bahia State|Polícia Militar do Estado da Bahia]] - Military Police of Bahia State<ref>{{Cite web |url=http://www.ssp.ba.gov.br/2019/08/6126/SSP-assina-contrato-para-aquisicao-de-mais-de-10-mil-pistolas-Glocks.html |title=SSP assina contrato para aquisição de mais de 10 mil pistolas Glocks |trans-title=SSP signs contract for the acquisition of more than 10,000 Glock pistols |last=Nascimento |first=Silvânia |website=SSP-BA (Department of Public Safety - Bahia State) |access-date=11 June 2021 |language=pt-BR |url-status=dead |archive-url=https://web.archive.org/web/20210611170833/http://www.ssp.ba.gov.br/2019/08/6126/SSP-assina-contrato-para-aquisicao-de-mais-de-10-mil-pistolas-Glocks.html |archive-date=2021-06-11}}</ref>
| style="text-align:center;"| ''22''
|-
|[[1º Batalhão de Forças Especiais]]<ref>{{Cite web |url=http://www.militarypower.com.br/frame4-trop8.htm |title=Batalhão de Forças Especiais (BFEsp) - Brasil |website=Military Power Review |language=pt-BR |access-date=2022-10-27}}</ref>
| style="text-align:center;"| ''17'', ''21''
|-
|{{flag|Canada}}
| [[Ontario Provincial Police]] (OPP);<ref name="glock.com" /> Quebec Provincial Police – [[Sûreté du Québec]] (SQ);{{sfnp|Kasler|1992|p=79}} [[Winnipeg Police Service]] Tactical Support Team<ref>{{cite web | url=https://globalnews.ca/news/3680510/3-arteries-severed-after-gun-spontaneously-discharges-on-winnipeg-police-officer/ | title=3 arteries severed after gun 'spontaneously discharges' on Winnipeg police officer - Winnipeg &#124; Globalnews.ca }}</ref>
| style="text-align:center;" | ''17'', ''17M'', ''19'', ''26'', ''35''
|-
|{{flag|China}}
| [[Special Police Unit of the Chinese People's Armed Police Force|Special Police Units]]
| style="text-align:center;"| ''17'', ''26''
|-
| rowspan=2|{{flag|Czech Republic}}
| [[601st Special Forces Group]];<ref>{{Cite web |url=http://www.601skss.cz/english/clickmap/glock_en.html |title=Pistol Glock 17 |website=601st Special Forces Group |access-date=26 January 2011 |url-status=dead |archive-url=https://web.archive.org/web/20110718164440/http://www.601skss.cz/english/clickmap/glock_en.html |archive-date=18 July 2011}}</ref> nonstandard sidearm issued on international deployments<ref>{{Cite web |url=http://www.army.cz/assets/files/9334/zbrane_definit.pdf |title=Ruční Zbraně AČR |trans-title=Small Arms of the Czech Army |page=38 |date=18 April 2007 |publisher=Ministry of Defence & Armed Forces of the Czech Republic |language=cs |access-date=29 June 2010 |url-status=live |archive-url=https://web.archive.org/web/20120229001255/http://www.army.cz/assets/files/9334/zbrane_definit.pdf |archive-date=29 February 2012}}</ref>
| style="text-align:center;"| ''17''
|-
| [[Police of the Czech Republic]], mainly special units<ref>{{cite web | url=https://www.policie.cz/clanek/verejna-zakazka-nakup-zbrani-glock.aspx | title=Veřejná zakázka - nákup zbraní Glock - Policie České republiky }}</ref>
| style="text-align:center;"| ''17''
|-
| {{flag|Denmark}}
| [[Sirius Dog Sled Patrol]], Greenland<ref>{{Cite web |url=https://www.americanrifleman.org/articles/2018/7/18/nine-lives-of-the-10-mm-auto/ |title=Nine Lives of the 10 mm Auto |last=Knupp |first=Jeremiah |date=18 July 2018 |website=[[American Rifleman]] |access-date=8 June 2019 |url-status=live |archive-url=https://web.archive.org/web/20190520024423/https://www.americanrifleman.org/articles/2018/7/18/nine-lives-of-the-10-mm-auto/ |archive-date=20 May 2019}}</ref>
| style="text-align:center;"| ''20''
|-
| rowspan=1|{{flag|Ecuador}}
| National Police,{{sfnp|Kasler|1992|p=79}} Various special police units such as the GOE and GIR{{sfnp|Kasler|1992|p=79}}
| style="text-align:center;"| ''17''
|-
| rowspan=2|{{flag|Estonia}}
| [[Police and Border Guard Board]]<ref>{{Cite web |url=https://www.pealinn.ee/tagid/koik/politsei-vahetab-valja-alles-moni-aasta-tagasi-soetatud-pustolid-n198472 |title=Politsei vahetab välja alles mõni aasta tagasi soetatud püstolid |trans-title=The police are replacing pistols only purchased a few years ago |date=8 August 2017 |website=Pealinn |access-date=10 February 2021 |language=et}}</ref><ref name="jones2009" />
| style="text-align:center;"| ''19''
|-
| [[Estonian Special Operations Force]]<ref>{{Cite news |url=https://www.postimees.ee/7176704/erioperatsioonide-vaejuhatus-votab-kasutusele-uued-relvad |title=Erioperatsioonide väejuhatus võtab kasutusele uued relvad |trans-title=Special Operations Command deploys new weapons |last=Andres |first=Einmann |date=10 February 2021 |newspaper=[[Postimees]] |language=et |access-date=10 February 2021}}</ref>
| style="text-align:center;"| ''19''
|-
| rowspan="3"|{{flag|Finland}}
| [[Finnish Defence Forces]]<ref name="ruotuvaki">{{cite magazine |url=http://www.mil.fi/ruotuvaki/?action=read_page&pid=132&aid=2176 |title=Puolustusvoimille uusia pistooleja |trans-title=New pistols for the defense forces |first=Viljami |last=Hanhenoja |date=12 February 2009 |magazine=Ruotuväki |publisher=[[Finnish Defence Forces]] |language=fi |access-date=16 August 2009 |url-status=dead |archive-url=https://web.archive.org/web/20090909035958/http://www.mil.fi/ruotuvaki/?action=read_page&pid=132&aid=2176 |archive-date=9 September 2009}}</ref>
| style="text-align:center;"| ''17'' (as ''9.00 PIST 2008'')
|-
| [[Law enforcement in Finland|Finnish Police]], primary service firearm;<ref>{{Cite news |url=http://www.hs.fi/kotimaa/artikkeli/Poliisi+hankkii+uusia+virka-aseita/1135226508558 |title=Poliisi hankkii uusia virka-aseita |trans-title=The Police are acquiring new service weapons |date=12 December 2007 |newspaper=[[Helsingin Sanomat]] |language=fi |access-date=16 August 2009 |url-status=dead |archive-url=https://web.archive.org/web/20131109143218/https://www.hs.fi/kotimaa/artikkeli/Poliisi+hankkii+uusia+virka-aseita/1135226508558/ |archive-date=9 November 2013}}</ref> [[Finnish Border Guard|Border Guard]] (Ministry of Interior)<ref name="ruotuvaki" />
| style="text-align:center;"| ''17'', ''19'', ''26''
|-
| [[Criminal Sanctions Agency]], Dept. of Corrections (''Vankeinhoitolaitos'') (Ministry of Justice)<ref name="ruotuvaki" />
| style="text-align:center;"| —
|-
| {{flag|France}}
| [[French Armed Forces]]<ref>{{Cite web |url=https://www.defenseworld.net/news/26125/France_Orders_75_000_Glock_17_Semi_Automatic_Pistols |title=France orders 75,000 Glock 17 semi-automatic pistols |date=7 January 2019 |website=Defense World |language=en |access-date=15 January 2019}}</ref><ref>{{Cite web |url=https://www.all4shooters.com/en/shooting/pro-zone/glock-17-gen5-for-france-here-is-the-pistolet-automatique-de-nouvelle-generation-pang/ |title=Glock 17 Gen5 for France: the "Pistolet Automatique de Nouvelle Génération" (PANG) |date=10 January 2019 |website=All4Shooters |language=en |access-date=15 January 2019}}</ref><ref name="glock" /><ref>{{Cite web |url=https://www.guns.com/news/2020/01/13/more-on-the-new-french-army-glocks-fn-scars |title=More on the New French Army Glocks, FN SCARs |date=13 January 2019 |website=Guns.com |language=en |access-date=15 January 2019}}</ref><ref name="JanesFra2020">{{Cite web |url=https://www.janes.com/article/93544/france-awards-pistol-and-sniper-rifle-contracts |date=7 January 2020 |title=France awards pistol and sniper rifle contracts |work=Jane's 360 |language=en |access-date=8 January 2020 |url-status=live |archive-url=https://web.archive.org/web/20200107165737/https://www.janes.com/article/93544/france-awards-pistol-and-sniper-rifle-contracts |archive-date=7 January 2020}}</ref> 
| style="text-align:center;" ; | ''17'', ''17 MOS'', ''19'', ''26'', ''34''
|-
| {{flag|Georgia}}
| Mainly used by [[Georgian Special Operations Forces|GSOF]] and some MIA units.{{sfnp|Kasler|1992|p=79}}<ref name="valpolini2009" /> Became standard issue for Georgian [[Ministry of Internal Affairs of Georgia|Ministry of Internal Affairs]] forces in October 2021.<ref>{{Cite web |url=https://georgianjournal.ge/news/37442-rearmament-underway-at-the-ministry-of-internal-affairs.html |title=Rearmament Underway at the Ministry of Internal Affairs |date=21 October 2021 |website=[[Georgian Journal]] |access-date=2022-02-15}}</ref>
| style="text-align:center;"| ''17'', ''21'', ''26''
|-
| rowspan="3"| {{flag|Germany}}
| [[Kommando Spezialkräfte Marine|Kampfschwimmer]] of the [[Bundeswehr]], G17 issued under designation ''P9''.<ref>{{Cite web |url=https://strategie-technik.blogspot.com/2014/08/taucher-glock-deutsche-marine-beschafft.html |title=Taucher-Glock: Deutsche Marine beschafft P9A1 |trans-title=Diver Glock: German Navy procures P9A1 |date=25 August 2014 |website=Strategie Technik |language=de |access-date=22 July 2018 |url-status=live |archive-url=https://web.archive.org/web/20180722155853/https://strategie-technik.blogspot.com/2014/08/taucher-glock-deutsche-marine-beschafft.html |archive-date=22 July 2018}}</ref><ref name="ESuT1">{{Cite web |url=https://esut.de/2019/01/meldungen/industrie/10083/glock-46-dienstpistolen/ |title=Glock 46 wird neue Dienstpistolen–Generation in Sachsen-Anhalt |trans-title=Glock 46 becomes a new generation service pistol in Saxony-Anhalt |date=22 January 2019 |language=de |website=Europäische Sicherheit & Technik |access-date=11 November 2019 |url-status=live |archive-url=https://web.archive.org/web/20191110022427/https://esut.de/2019/01/meldungen/industrie/10083/glock-46-dienstpistolen/ |archive-date=10 November 2019}}</ref>
| style="text-align:center;"| ''17''
|-
| [[Federal Police (Germany)|Federal]] and [[Landespolizei|State Police]], tactical units ([[GSG 9]], [[Special Deployment Commando|SEKs]]); [[Bundeszollverwaltung|Customs]] ([[Zentrale Unterstützungsgruppe Zoll|ZUZ]]) - G17, G19, G26.<ref name="ESuT1" />
| style="text-align:center;"| ''17'', ''19'', ''26''
|-
| State Police in [[Saxony-Anhalt]] - about 8,600 G46 TR, standard issue firearm.<ref name="ESuT1" /><ref name="Polizeipraxis" />
| style="text-align:center;"| ''46''
|-
| {{flag|Greece}}
| ''[[Special Suppressive Antiterrorist Unit (Greece)|Ειδική Κατασταλτική Αντιτρομοκρατική Μονάδα]]'' (EKAM) unit of the [[Hellenic Police]]<ref>{{Cite magazine |url=http://www.smallarmsreview.com/display.article.cfm?idarticles=1881 |title=Specialized Weaponry & Equipment of Ekam |last=Ziros |first=Prokopius |magazine=Small Arms Review |date=April 2005 |volume=8 |number=7 |quote=The primary handgun issued to EKAM members is the Glock 21 .45ACP. |url-status=dead |archive-url=https://web.archive.org/web/20210307232803/http://www.smallarmsreview.com/display.article.cfm?idarticles=1881 |archive-date=2021-03-07}}</ref>
| style="text-align:center;"| ''21''
|-
| {{flag|Hong Kong}}
| [[Hong Kong Police Force]] (incl. special units SDU, CTRU, ASU, SBDIV),{{sfnp|Kasler|1992|p=79}} [[Independent Commission Against Corruption (Hong Kong)|ICAC]], [[Customs and Excise Department (Hong Kong)|C&E Dept.]]
| style="text-align:center;"| ''17'', ''19''
|-
| rowspan=2|{{flag|Iceland}}
| [[Iceland Crisis Response Unit]] (Ministry of Foreign Affairs)<ref name="Logreglukonur.is" /><ref name="logreglan.is" /><ref name="Íslenskur her" />
| style="text-align:center;"| —
|-
| [[Icelandic National Police]],<ref name="Logreglukonur.is">{{Cite web |url=http://www.logreglukonur.is/greinasafn.php?subaction=showfull&id=1175185763&archive=&start_from=&ucat=2& |title=Tengslanet lögreglukvenna: Lögreglukonur í skotfimi |trans-title=Policewomen's network: Policewomen in shooting |date=29 March 2007 |website=Lögreglukonur |language=is |access-date=24 July 2009 |url-status=dead |archive-url=https://web.archive.org/web/20090908213209/http://www.logreglukonur.is/greinasafn.php?subaction=showfull&id=1175185763&archive=&start_from=&ucat=2& |archive-date=8 September 2009}}</ref><ref name="logreglan.is">{{Cite web |url=http://www.logreglan.is/upload/files/20-1-2003-4474.pdf |title=Ríkislögreglustjórinn: Rekstur embættis ríkislögreglustjórans árið 1999 |trans-title=The National Police Commissioner: Operation of the Office of the National Police Commissioner in 1999 |language=is |website=Lögreglan |access-date=24 July 2009 |url-status=dead |archive-url=https://web.archive.org/web/20110722022617/http://www.logreglan.is/upload/files/20-1-2003-4474.pdf |archive-date=22 July 2011}}</ref><ref name="Íslenskur her">{{Cite web |url=http://mbl.is/mm/mogginn/blad_dagsins/bl_grein.html?radnr=803269 |title=Íslenskur her: Hugmyndir um stofnun íslensks hers í 400 ár |trans-title=Icelandic army: Ideas about the establishment of the Icelandic army for 400 years |date=29 January 2005 |newspaper=[[Morgunblaðið]] |language=is |access-date=24 July 2009 |url-status=dead |archive-url=https://web.archive.org/web/20090630185313/http://mbl.is/mm/mogginn/blad_dagsins/bl_grein.html?radnr=803269 |archive-date=30 June 2009}}</ref> ''[[Icelandic special forces|Víkingasveitin]]'' units<ref name="Logreglukonur.is" /><ref name="logreglan.is" /><ref name="Íslenskur her" /> (Ministry of Interiour)
| style="text-align:center;"| —
|-
|{{flag|India}}
| Standard Issue side arm for special forces [[Para (Special Forces)|Para (SF)]] (Army), [[MARCOS]] (Navy), [[National Security Guard]] (Min. of Home Aff.).{{sfnp|Kasler|1992|p=79}}
| style="text-align:center;" | ''17'', ''26''
|-
| rowspan="2" |{{flag|Indonesia}}
|[[Indonesian National Armed Forces]] ([[Indonesian Army|Army]], [[Indonesian Navy|Navy]], [[Indonesian Air Force|Air Force]])<ref>{{Cite web |date=7 December 2015 |title=Komandan Kopassus: Mungkin Banyak Prajurit yang Buang Air di Celana |url=https://www.jpnn.com/news/komandan-kopassus-mungkin-banyak-prajurit-yang-buang-air-di-celana |access-date=2023-09-01 |website=www.jpnn.com |language=id}}</ref><ref>{{Cite web |last=Rizall (MG) |first=Ashar Saifur |title=Kopaska Pamer Alutsista Jelang Hari Jadi ke-56 - TIMES Indonesia |url=https://timesindonesia.co.id/peristiwa-daerah/168650/kopaska-pamer-alutsista-jelang-hari-jadi-ke56 |access-date=2023-09-01 |website=timesindonesia.co.id |language=id}}</ref><ref>{{Cite web |last=Sugiri Sukani |first=Penerangan Lanud |date=30 Sep 2022 |title=Jarak 25 Meter Menembak Pistol, Harus Dikuasai Oleh Personel Lanud Sugiri Sukani. |trans-title=Shooting a pistol at a distance of 25 meters must be mastered by Sugiri Sukani Air Force Base personnel. |url=https://tni-au.mil.id/jarak-25-meter-menembak-pistol-harus-dikuasai-oleh/ |access-date=1 September 2023 |website=TNI Angkatan Udara |language=id}}</ref><ref>{{Cite web |date=2022-08-10 |title=Perwira Lanud Dumatubun Latihan Menembak Pistol {{!}} MalukuTerkini.com |url=https://www.malukuterkini.com/2022/08/10/perwira-lanud-dumatubun-latihan-menembak-pistol/ |access-date=2023-09-01 |language=id-ID}}</ref><ref>{{Cite web |last=Sultan Iskandar Muda |first=Penerangan Lanud |date=27 March 2018 |title=Lomba Menembak Eksklusif Ajang Bergengsi di Lanud Sim |trans-title=Exclusive Shooting Contest Prestigious Event at Sultan Iskandar Muda Air Force Base |url=https://tni-au.mil.id/lomba-menembak-eksklusif-ajang-bergengsi-di-lanud-sim/ |access-date=2023-09-01 |website=tni-au.mil.id |language=id-ID}}</ref>
| style="text-align:center;"| ''17'', ''19'', ''26, 42''
|-
|[[Indonesian National Police]]<ref>{{Cite web |last=Indonesia |first=C. N. N. |title=Spesifikasi Glock 17, Diduga Pistol Bharada E dalam Penembakan Polisi |url=https://www.cnnindonesia.com/teknologi/20220715095430-199-821861/spesifikasi-glock-17-diduga-pistol-bharada-e-dalam-penembakan-polisi |access-date=2023-09-01 |website=teknologi |language=id-ID}}</ref>
| style="text-align:center;"| ''17''
|-
| {{flag|Iraq}}
| [[Iraqi security forces]] - military and law enforcement forces (purchased 125,163 pistols)<ref>{{Cite book |title=Jane's Infantry Weapons 2009–2010 |editor-last=Jones |editor-first=Richard |publisher=Jane's Information Group |year=2009 |isbn=978-0-710628695 |page=897}}</ref>
| style="text-align:center;"| ''19''
|-
| rowspan=1|{{flag|Israel}}
| [[Israeli Defense Forces]],<ref name="valpolini2009" /> [[Israel Police]]
| style="text-align:center;"| ''17'', ''19''
|-
| {{flag|Jordan}}
| Royal Guard{{sfnp|Kasler|1992|p=79}}
| style="text-align:center;"| —
|-
| {{flag|Kosovo}}
| [[Kosovo Police]], [[Kosovo Security Force]]<ref name="SALW survey of Kosovo">{{Cite web |url=http://www.smallarmssurvey.org/files/portal/spotlight/country/eu_pdf/europe-kosovo-2006.pdf |title=SALW survey of Kosovo |website=[[Small Arms Survey]] |access-date=11 February 2010 |url-status=dead |archive-url=https://web.archive.org/web/20100705043746/http://www.smallarmssurvey.org/files/portal/spotlight/country/eu_pdf/europe-kosovo-2006.pdf |archive-date=5 July 2010}}</ref><ref name="gazetaexpress.com">{{Cite news |url=http://www.gazetaexpress.com/web/index.php/artikujt/lexo/24626/C4/C16 |title=Këta janë militantët tjerë të Vetëvendosjes të punësuar nga Shpend Ahmeti në Komunë |trans-title=These are the other Vetëvendosje militants employed by Shpend Ahmeti in the Municipality |date=22 August 2016 |website=[[Gazeta Express]] |language=sq |access-date=29 June 2010 |url-status=dead |archive-url=https://web.archive.org/web/20160822133844/http://www.gazetaexpress.com/web/index.php/artikujt/lexo/24626/C4/C16/ |archive-date=22 August 2016}}</ref>
| style="text-align:center;"| ''17''
|-
| {{flag|Latvia}}
| [[Latvian National Armed Forces|Latvian Military]],<ref name="valpolini2009" /> standard issue pistols with [[Latvian Land Forces|Land Forces]].<ref>{{Cite web |url=https://likumi.lv/ta/id/113631-par-ierocu-modelu-noteiksanu-un-iepirkumu-nacionalo-brunoto-speku-vajadzibam |title=Par ieroču modeļu noteikšanu un iepirkumu Nacionālo bruņoto spēku vajadzībām |trans-title=On the determination and procurement of weapons for the National Armed Forces |date=28 July 2005 |website=Likumi (Legal Acts of The Republic of Latvia) |language=lv}}</ref><ref>{{Cite web |url=http://www.mod.gov.lv/~/media/AM/Aktualitates/Publikacijas/Informativie%20materiali/Informativas%20lapas/NBS_2008.ashx |title=Faktu lapa "Nacionālie bruņotie spēki" |trans-title=National Armed Forces Fact Sheet |date=2008 |website=[[Ministry of Defence (Latvia)|Ministry of Defence]] |language=lv}}</ref><ref>{{Cite web |url=https://www.tvnet.lv/4741692/am-sagatavojusi-jaunus-armijas-ierocu-standartus |title=AM sagatavojusi jaunus armijas ieroču standartus |trans-title=The Ministry of Defense has prepared new standards for army weapons |date=12 July 2018 |website=TV.net |agency=[[LETA]] |language=lv}}</ref>
| style="text-align:center;"| ''17'', ''19'', ''21'', ''26''
|-
| rowspan=2|{{flag|Lithuania}}
| [[Military of Lithuania|Lithuanian Armed Forces]]<ref name="valpolini2009" /><ref>{{Cite web |url=http://soj.lt/ginklai_technika/Glock-17/ |title=Pistoletas Glock 17 |website=Specialiųjų Operacijų Junginys |language=lt |access-date=24 July 2009 |url-status=dead |archive-url=https://web.archive.org/web/20090630083227/http://soj.lt/ginklai_technika/Glock-17/ |archive-date=30 June 2009}}</ref>
| style="text-align:center;"| ''17''
|-
| [[Law enforcement in Lithuania|Lithuanian Police]]<ref>{{Cite web |url=http://www.baltictimes.com/news/articles/16854/ |title=Lithuanian cops get new guns |date=2006-11-21 |website=[[The Baltic Times]] |access-date=20 December 2010 |url-status=live |archive-url=https://web.archive.org/web/20110629120805/http://www.baltictimes.com/news/articles/16854/ |archive-date=29 June 2011}}</ref>
| style="text-align:center;"| ''17'', ''19'', ''26''
|-
| rowspan=2|{{flag|Luxembourg}}
| [[Luxembourg Army]]<ref>{{Cite web |url=http://www.armee.lu/materiel/armement.php |title=Armement |website=Lëtzebuerger Arméi |language=fr |url-status=dead |archive-url=https://web.archive.org/web/20110720110506/http://www.armee.lu/materiel/armement.php |archive-date=20 July 2011}}</ref>
| style="text-align:center;"| ''17''
|-
| ''[[Unité Spéciale de la Police]]'' of the [[Grand Ducal Police]]<ref>{{Cite web |url=http://www.usp.lu/armement-pistolets-fr.php |title=Unofficial Pistols Page, Equipment |website=Unofficial Website of Unité Spéciale, Officially Endorsed |access-date=6 October 2009 |url-status=dead |archive-url=https://web.archive.org/web/20110722161231/http://www.usp.lu/armement-pistolets-fr.php |archive-date=22 July 2011}}</ref><ref>{{Cite magazine |url=http://www.usp.lu/media/raids.pdf |title=L'Unite d'Intervention de la Police Luxembourgeoise |date=March 2006 |magazine=RAIDS |language=fr |access-date=23 September 2009 |url-status=dead |archive-url=https://web.archive.org/web/20110722160041/http://www.usp.lu/media/raids.pdf |archive-date=22 July 2011}}</ref>
| style="text-align:center;"| ''17'', ''26''
|-
| rowspan="3" |{{flag|Malaysia}}
| [[Malaysian Armed Forces]]<ref name="Thompson, Leroy December 2008">{{Cite web |url=http://www.tactical-life.com/online/special-weapons/malaysian-special-forces |title=Malaysian Special Forces |last=Thompson |first=Leroy |date=December 2008 |website=Tactical Life |access-date=29 November 2009 |url-status=live |archive-url=https://web.archive.org/web/20120402013858/http://www.tactical-life.com/online/special-weapons/malaysian-special-forces/ |archive-date=2 April 2012}}</ref>
| style="text-align:center;"| ''17'', ''19'', ''34''
|-
| [[Malaysian Maritime Enforcement Agency|Malaysia Coast Guard]] (MMEA);<ref>{{Cite web |url=http://58.26.13.195/index.php?option=com_content&view=article&id=1698&Itemid=275&lang=ms |title=Kursus Pengendalian Senjata Kecil di WILSAR |trans-title=Small Arms Control Course at WILSAR |first=Mohd Husaini |last=Kamal |date=24 June 2011 |website=Malaysian Maritime Enforcement Agency |language=ms |access-date=29 November 2009 |url-status=dead |archive-url=https://web.archive.org/web/20120402121531/http://58.26.13.195/index.php?option=com_content&view=article&id=1698&Itemid=275&lang=ms |archive-date=2 April 2012}}</ref> [[Royal Malaysia Police]]<ref name="Thompson, Leroy December 2008" /> (Ministry of Home Affairs)
| style="text-align:center;"| ''17'', ''18'', ''19'', ''26'', ''34''
|-
| [[Royal Malaysian Customs Department|Royal Malaysian Customs]] (Ministry of Finance)<ref>{{Cite web |url=http://www.akmal.gov.my/?do=content&id=50 |title=Lapang Sasar |trans-title=Shooting range |website=Akademi Kastam Diraja Malaysia [Royal Malaysian Customs Academy] |language=ms |access-date=22 August 2011 |url-status=dead |archive-url=https://web.archive.org/web/20110722233214/http://www.akmal.gov.my/?do=content&id=50 |archive-date=2011-07-22}}</ref>
| style="text-align:center;"| ''17'', ''19'', ''26'', ''43''
|-
| {{flag|Mexico}}
| [[Mexican Navy|Armada de México]] (Navy){{sfnp|Kasler|1992|p=79}}
| style="text-align:center;"| ''17''
|-
| {{flag|Monaco}}
| ''[[Compagnie des Carabiniers du Prince]]''<ref>{{Cite book |last=Giletta |first=Jacques |title=Les Gardes Personnelles des Princes de Monaco |language=fr |publisher=Taurus Editions |year=2005 |isbn=2-912976-04-9 |edition=1st}}</ref><ref>{{Cite web |url=http://freeriders2.over-blog.com/article-la-releve-de-la-garde-sur-the-rock-102936508.html |title=La Releve de la Garde sur "The Rock" |author=Biker06 |date=18 July 2012 |website=FreeRiders |language=fr |access-date=20 July 2012 |url-status=live |archive-url=https://web.archive.org/web/20121012075623/http://freeriders2.over-blog.com/article-la-releve-de-la-garde-sur-the-rock-102936508.html |archive-date=12 October 2012}}</ref>
| style="text-align:center;"| ''17''
|-
| {{flag|Montenegro}}
| [[Armed Forces of Montenegro]], standard military sidearm.<ref>{{Cite journal |url=http://www.gov.me/files/1256832119.pdf |last=Danilović |first=Mihailo |date=19 October 2009 |title=Nova oprema i stanovi |trans-title=New equipment and apartments |journal=Partner |language=cnr |page=15 |issn=1800-7759 |access-date=4 November 2009 |url-status=dead |archive-url=https://web.archive.org/web/20110725140920/http://www.gov.me/files/1256832119.pdf |archive-date=25 July 2011}}</ref>
| style="text-align:center;"| ''17''
|-
| {{flag|Myanmar}}
| Used by [[Myanmar Army]]<ref name="jones2009">{{Cite book |editor-last1=Jones |editor-first1=Richard D. |editor-last2=Ness |editor-first2=Leland S. |title=Jane's Infantry Weapons 2009/2010 |edition=35th |date=27 January 2009 |location=Coulsdon |publisher=Jane's Information Group |isbn=978-0-7106-2869-5}}</ref> and the Myanmar Police Special Task Force. Manufactured locally as ''MA-1 MK-II''.<ref>{{Cite web |url=https://www.thefirearmblog.com/blog/2018/07/20/ma5-the-burmese-tatmadaws-production-glock |title=MA5 MK II: The Burmese Tatmadaw's Production Glock Handgun |date=20 July 2018 |website=The Firearm Blog |access-date=3 August 2018 |url-status=live |archive-url=https://web.archive.org/web/20180803163651/https://www.thefirearmblog.com/blog/2018/07/20/ma5-the-burmese-tatmadaws-production-glock |archive-date=3 August 2018}}</ref>
| style="text-align:center;"| ''MA5 MK II''
|-
| rowspan=2|{{flag|Netherlands}}
| [[Armed forces of the Netherlands|Military of the Netherlands]];<ref name="valpolini2009" /><ref>{{Cite web |url=http://www.defensie.nl/landmacht/materieel/bewapening_en_geleide_wapens/(hand-)vuurwapens/glock_17 |title=Glock 17, pistool 9&nbsp;mm |website=[[Ministry of Defence (Netherlands)|Ministerie van Defensie]] |language=nl |access-date=29 June 2010 |url-status=dead |archive-url=https://web.archive.org/web/20111001010549/http://www.defensie.nl/landmacht/materieel/bewapening_en_geleide_wapens/%28hand-%29vuurwapens/glock_17 |archive-date=1 October 2011}}</ref><ref name="Jones">{{Cite book |editor-last=Jones |editor-first=Richard |title=Jane's Infantry Weapons 2009–2010 |publisher=Jane's Information Group |year=2009 |isbn=978-0-710628695 |page=900}}</ref> [[Royal Marechaussee]] (Min. of Defence) [[Brigade Speciale Beveiligingsopdrachten|BSB]] sections ''Persoonsbeveiliging'' (PB), ''Observatie Team'' (OT) and Sky Marshals also use Glock 26.<ref name="Timmer">{{Cite book |last=Timmer |first=Jaap |title=Politiegeweld: geweldgebruik van en tegen de politie in Nederland |trans-title=Police brutality: use of force by and against the police in the Netherlands |language=nl |publisher=Kluwer |year=2005 |isbn=978-9-013026672 |page=606}}</ref>
| style="text-align:center;"| ''17'', ''18'', ''26''
|-
| [[Law enforcement in the Netherlands|Dutch Police]], standard issue firearm of the [[Dienst Speciale Interventies]].<ref>{{Cite web |url=http://www.arrestatieteam.nl/artikelen/glockvoorats.php |title=Glock 17 pistool bij de Arrestatieteams |website=De Blauwe Baret |date=2007 |language=nl |url-status=dead |archive-url=https://web.archive.org/web/20080914184432/http://www.arrestatieteam.nl/artikelen/glockvoorats.php |archive-date=14 September 2008}}</ref><ref>{{Cite web |url=http://www.politieparcours.eu/PDF%20files/Sam156.pdf |title=Het nieuwe politie pistool, deel 1 |trans-title=The new police pistol, part 1 |language=nl |magazine=SAM-Wapenmagazine |number=156 |pages=26–28 |access-date=29 June 2010 |url-status=live |archive-url=https://web.archive.org/web/20110304150007/http://www.politieparcours.eu/PDF%20files/Sam156.pdf |archive-date=4 March 2011}}</ref><ref>{{Cite web |url=http://www.politieparcours.eu/PDF%20files/sam158.pdf |title=Het nieuwe politie pistool, deel 2 |trans-title=The new police pistol, part 2 |language=nl |magazine=SAM-Wapenmagazine |number=158 |pages=41 |access-date=29 June 2010 |url-status=live |archive-url=https://web.archive.org/web/20110304162851/http://www.politieparcours.eu/PDF%20files/sam158.pdf |archive-date=4 March 2011}}</ref>
| style="text-align:center;"| ''17''
|-
| rowspan=2|{{flag|New Zealand}}
| [[New Zealand Defence Force]]<ref>{{Cite web |url=http://www.scoop.co.nz/stories/AK1511/S00624/nzdf-to-get-new-glock-pistols.htm |title=NZDF To Get New Glock Pistols |website=Scoop News |access-date=25 November 2015 |url-status=live |archive-url=https://web.archive.org/web/20151126073035/http://www.scoop.co.nz/stories/AK1511/S00624/nzdf-to-get-new-glock-pistols.htm |archive-date=26 November 2015

}}</ref>
| style="text-align:center;"| ''17''
|-
| [[New Zealand Police]]<ref>{{Cite web |url=http://www.topglock.com/Content.aspx?cKey=Glock_Flash |title=Glock 17 |date=13 January 1985 |website=Topglock.com |access-date=24 July 2009 |url-status=dead |archive-url=https://web.archive.org/web/20080312221816/http://topglock.com/Content.aspx?cKey=Glock_Flash |archive-date=12 March 2008}}</ref> ''(an "unarmed service", but are trained to use firearms)''
| style="text-align:center;"| ''17''
|-
| {{flag|Norway}}
| [[Norwegian Armed Forces]]{{sfnp|Kasler|1992|p=79}}<ref name="valpolini2009" />
| style="text-align:center;"| ''17'' (''P-80'', ''P-80NM1'', ''P-80NM2'')
|-
| {{flag|Pakistan}}
| In use with [[Special Service Group]] units<ref name="JDW2006">{{Cite web |url=http://articles.janes.com/articles/Janes-Defence-Weekly-2006/IDEAS-2006-Pakistan-selects-Sig-Sauer-pistols-for-special-forces.html |title=IDEAS 2006: Pakistan selects SIG Sauer pistols for Special Forces |last=White |first=Andrew |date=November 27, 2006 |website=Janes Defence Weekly |access-date=7 May 2017 |url-status=dead |archive-url=https://archive.today/20130216073615/http://articles.janes.com/articles/Janes-Defence-Weekly-2006/IDEAS-2006-Pakistan-selects-Sig-Sauer-pistols-for-special-forces.html |archive-date=16 February 2013}}</ref>
| style="text-align:center;"| ''17'', ''19''
|-
| rowspan="3"|{{flag|Philippines}}
| [[Armed Forces of the Philippines]],<ref name="AFP Glocks">{{Cite web |url=http://www.tactical-life.com/news/glock-17-gen4-philippines-armed-forces/#glock-17-gen4-2 |title=Glock 17 Gen4 Wins Philippines Armed Forces Solicitation |date=26 September 2017 |website=Tactical Life |url-status=live |archive-url=https://web.archive.org/web/20170930040236/http://www.tactical-life.com/news/glock-17-gen4-philippines-armed-forces/#glock-17-gen4-2 |archive-date=30 September 2017}}</ref> [[Philippine Army]],<ref name="AFP Glocks" /> [[Philippine Marine Corps]] MARSOG,<ref>{{Cite web |url=http://www.pna.gov.ph/articles/992877 |title=PMC to get new anti-terror equipment from US gov't |date=2 June 2017 |work=[[Philippine News Agency]] |access-date=3 June 2017 |url-status=dead |archive-url=https://web.archive.org/web/20170605121719/http://www.pna.gov.ph/articles/992877 |archive-date=5 June 2017}}</ref> [[Presidential Security Group]] (joint service unit){{sfnp|Kasler|1992|p=79}}
| style="text-align:center;"| ''17'', ''21''
|-
| [[National Intelligence Coordinating Agency]], [[Philippine Drug Enforcement Agency]]{{sfnp|Kasler|1992|p=79}} ([[Office of the President of the Philippines|Office of President]]){{sfnp|Kasler|1992|p=79}}
| style="text-align:center;"| —
|-
| [[National Bureau of Investigation (Philippines)|National Bureau of Investigation]] (Dept. of Justice);{{sfnp|Kasler|1992|p=79}} [[Philippine National Police]] ([[Department of the Interior and Local Government|DILG]]){{sfnp|Kasler|1992|p=79}}
| style="text-align:center;"| ''17''
|-
|{{flag|Peru}}
|[[Peruvian Air Force]], [[Peruvian Army]], [[Peruvian Navy]], Dirección Nacional Antidrogas.
| style="text-align:center;"| ''17''
|-
| rowspan=2|{{flag|Poland}}
| [[Polish Armed Forces]]<ref name="valpolini2009" />
| style="text-align:center;"| ''17''
|-
| [[Border Guard (Poland)|Border Guard]];<ref>{{Cite web |url=http://www.altair.com.pl/news/view?news_id=140&q=ATR%2072 |title=Kolejny przetarg na pistolety dla Policji i SG |trans-title=Another tender for pistols for the Police and Border Guard |language=pl |website=Altair Agencja Lotnicza |access-date=25 December 2014 |url-status=live |archive-url=https://web.archive.org/web/20141225172605/http://www.altair.com.pl/news/view?news_id=140&q=ATR%2072 |archive-date=25 December 2014}}</ref> [[Policja (Poland)|Polish Police]]<ref>{{Cite web |url=http://www.policja.pl/portal.php?serwis=pol&dzial=1&id=8085&search=394 |title=Policjanci będą strzelać z glocków |trans-title=The cops will be shooting Glocks |date=August 24, 2007 |website=Komenda Główna Policji |language=pl |access-date=24 July 2009 |url-status=dead |archive-url=https://web.archive.org/web/20110718130213/http://www.policja.pl/portal.php?serwis=pol&dzial=1&id=8085&search=394 |archive-date=18 July 2011}}</ref> (Ministry of Interior and Admin.)
| style="text-align:center;"| ''17'', ''19'', ''26''
|-
| rowspan="3" |{{flag|Portugal}}
|[[Portuguese Army]];<ref>{{Cite web |url=https://special-ops.org/52138/portuguese-army-adopts-glock-17-gen5-coyote/ |title=Portuguese Army Adopts Glock 17 Gen5 Coyote |last=Ferreira |first=Bryan |date=11 October 2019 |website=Spec Ops Magazine |language=en-US |access-date=13 October 2019}}</ref> [[Portuguese Marine Corps]];<ref name="valpolini2009" /><ref name="diario.iol.pt">{{Cite web |url=http://diario.iol.pt/sociedade/armas-glock-rui-pereira-psp-gnr/988074-4071.html |title=PSP e GNR recebem dez mil pistolas Glock |trans-title=PSP and GNR receive ten thousand Glock pistols |first=Hugo |last=Beleza |date=5 September 2008 |website=IOL Diário |language=pt |access-date=29 June 2010 |url-status=dead |archive-url=https://web.archive.org/web/20090221045217/http://diario.iol.pt/sociedade/armas-glock-rui-pereira-psp-gnr/988074-4071.html |archive-date=21 February 2009}}</ref> Maritime Police;<ref>{{Cite news |url=https://www.cmjornal.pt/portugal/detalhe/agentes-da-pm-equipados-com-novas-pistolas-glock |title=Agentes da PM equipados com novas pistolas Glock |trans-title=PM agents equipped with new Glock pistols |date=21 April 2007 |newspaper=[[Correio da Manhã (Portugal)|Correio da Manhã]] |language=pt-PT |access-date=21 December 2020}}</ref> Military Judiciary Police;<ref>{{Cite web |url=https://www.defesa.gov.pt/pt/defesa/organizacao/sc/pjm/Paginas/default.aspx |title=Polícia Judiciária Militar |website=[[Ministry of National Defence (Portugal)|Portal da Defesa na Internet]] |language=pt-PT |access-date=2023-01-26}}</ref> (Ministry of National Defence)
| style="text-align:center;" |''17''
|-
| [[Republican National Guard (Portugal)|Guarda Nacional Republicana]];<ref name="diario.iol.pt" /> [[Polícia de Segurança Pública]];<ref>{{Cite web |url=https://www.operacional.pt/gioe-gnr-2019-novo-equipamento-de-proteccao-individual-e-armamento/ |title=GIOE/GNR – 2019: Novo Equipamento de Protecção Individual e Armamento |trans-title=GIOE/GNR - 2019: New Personal Protection Equipment and Weapons |first=Miguel |last=Machado |date=October 8, 2019 |website=OPeracional |language=pt}}</ref> [[Foreigners and Borders Service]];<ref>{{Cite news |url=https://www.cmjornal.pt/portugal/detalhe/psp-e-sef-recebem-mais-1150-armas |title=PSP e SEF recebem mais 1150 armas |trans-title=PSP and SEF receive another 1150 weapons |first=Miguel |last=Curado |date=October 16, 2018 |newspaper=Correio da Manhã |language=pt-PT |access-date=21 December 2020}}</ref> Municipal Police;<ref>{{Cite web |url=https://www.dn.pt/sociedade/policia-municipal-reforcada-a-pensar-em-obras-e-turismo-5177629.html |title=Polícia Municipal reforçada a pensar em obras e turismo |trans-title=Municipal Police reinforced to think about works and tourism |first=Rute |last=Coelho |date=17 May 2016 |newspaper=[[Diário de Notícias]] |language=pt |access-date=21 December 2020}}</ref> (Ministry of Internal Administration)
| style="text-align:center;"| ''19'', ''19X''
|-
|[[Judiciary Police (Portugal)|Judiciary Police]];<ref>{{Cite web |url=https://www.pressminho.pt/menina-raptada-de-ponte-de-lima-policia-judiciaria-so-actuou-quando-havia-condicoes-de-seguranca-diz-director-da-pjbraga/ |title=Menina de Ponte de Lima resgatada: "Polícia Judiciária só actuou quando havia condições de segurança", diz director da PJ/Braga |trans-title=Girl from Ponte de Lima rescued: "Judiciary Police only acted when there were security conditions", says PJ director Braga |last=Gualtieri |first=Fernando |date=11 March 2017 |website=Press Minho |language=pt-PT |access-date=21 December 2020}}</ref> Prison Guard;<ref>{{Cite web |url=https://www.publico.pt/2008/04/30/video/portugal-grupo-de-intervencao-prisional-comemora-aniversario-com-simulacoes-de-motins-e-fogo-cruzad-20080430152958 |title=Portugal: Grupo de intervenção prisional comemora aniversário com simulações de motins e fogo cruzado |trans-title=Portugal: Prison intervention group celebrates anniversary with mock riots and crossfire |date=30 April 2008 |website=Público |language=pt |access-date=21 December 2020}}</ref> (Ministry of Justice)
|style="text-align:center;"| ''19'', ''26''
|-
| {{flag|Romania}}
| [[Romanian Armed Forces]]<ref name="valpolini2009" />
| style="text-align:center;"| ''17'', ''17L'', ''19''
|-
|rowspan="2"|{{flag|Russia}}
| [[Special Operations Forces (Russia)|Special Operations Forces]]<ref>{{Cite web |url=https://informnapalm.org/en/special-operations-forces-analysis-situation-senezh-special-operations-center/ |title=Special Operations Forces: Analysis of the Situation at the Senezh Special Operations Center |date=19 October 2016 |website=InformNapalm.org |access-date=15 March 2018 |url-status=live |archive-url=https://web.archive.org/web/20180315200626/https://informnapalm.org/en/special-operations-forces-analysis-situation-senezh-special-operations-center/ |archive-date=15 March 2018}}</ref>
| style="text-align:center;"| ''17'', ''26''
|-
| [[Federal Security Service]] (FSB);<ref>{{cite book |last=Galeotti |first=Mark |date=2015 |title=Spetsnaz: Russia's Special Forces |series=Elite |location=Oxford |publisher=Osprey Publishing |isbn=978-1-472807229}}</ref> [[Ministry of Internal Affairs (Russia)|Ministry of Internal Affairs]] (MVD), special forces<ref>{{Cite web |url=http://www.mvd.ru/news/35604/ |title=Спецподразделения МВД России вооружают пистолетом Glock-17 |trans-title=Special forces of the MVD are armed with the Glock-17 pistol |website=[[Ministry of Internal Affairs (Russia)|Ministry of Internal Affairs]] |language=ru |access-date=29 June 2010 |url-status=dead |archive-url=https://web.archive.org/web/20100301192043/http://www.mvd.ru/news/35604 |archive-date=1 March 2010}}</ref><ref>{{Cite web |url=http://lenta.ru/news/2009/12/11/glock/ |title=Оружие: Спецподразделения МВД вооружатся австрийскими пистолетами |trans-title=Weapons: Special forces of the MVD will be armed with Austrian pistols |date=11 December 2009 |website=[[Lenta.ru]] |language=ru |access-date=29 June 2010 |url-status=live |archive-url=https://web.archive.org/web/20100804082549/http://lenta.ru/news/2009/12/11/glock/ |archive-date=4 August 2010}}</ref>
|style="text-align:center;"| ''17'', ''19''
|-
| {{flag|Serbia}}
| [[Police of Serbia]]<ref>{{Cite web |url=http://specijalne-jedinice.com/Srbija/SAJ-English.html#sthash.M9sN4viD.dpbs |title=Special Anti-Terrorist Unit-SAU |website=Specijalne-jedinice.com |access-date=25 January 2017 |url-status=dead |archive-url=https://web.archive.org/web/20160916170205/http://specijalne-jedinice.com/Srbija/SAJ-English.html#sthash.JYnURmUd.dpbs |archive-date=2016-09-16}}</ref><ref>{{Cite web |url=http://specijalne-jedinice.com/Srbija/Zandarmerija-English.html#sthash.Adk3DADf.dpbs |title=Gendarmerie of the Republic of Serbia |access-date=25 January 2017 |website=Specijalne-jedinice.com |url-status=dead |archive-url=https://web.archive.org/web/20170202075416/http://specijalne-jedinice.com/Srbija/Zandarmerija-English.html#sthash.Adk3DADf.dpbs |archive-date=2 February 2017}}</ref>
| style="text-align:center;"| ''17'', ''19'', ''21'', ''35''
|-
| rowspan=1|{{flag|Singapore}}
| [[Singapore Police Force]];<ref>{{Cite web |url=https://www.thefirearmblog.com/blog/2019/04/02/glock-asia-pacific-to-supply-pistols-to-the-singapore-police-force/ |title=Breaking: Glock to Supply 6,000 Glock 19 Gen 5 Pistols to the Singapore Police Force |date=2 April 2019 |website=The Firearm Blog |language=en-US |access-date=26 May 2021}}</ref> [[Singapore Prison Service|Prison Service]] (Ministry of Home Affairs)<ref>{{Cite web |url=http://www.maritimejobs.com/ResumeShow.aspx?ResumeShow=115247 |title=Security Officer & Institution Chief Armourer |access-date=25 June 2010 |website=Maritime Jobs |publisher=Singapore Prison Service |url-status=live |archive-url=https://web.archive.org/web/20110714034803/http://www.maritimejobs.com/ResumeShow.aspx?ResumeShow=115247 |archive-date=14 July 2011}}</ref>
| style="text-align:center;"| ''19''
|-
| rowspan="2" |{{flag|Slovakia}}
| [[5th Special Operations Regiment (Slovakia)]]<ref>{{Cite web |url=https://www.armadninoviny.cz/nazor-jak-slovensko-nakoupilo-pistole-cz-75-a-glock-17.html |title=NÁZOR: Jak Slovensko nakoupilo pistole CZ-75 a Glock 17 |trans-title=OPINION: How Slovakia bought CZ-75 and Glock 17 pistols |first=Samuel |last=Kolesar |date=12 July 2016 |website=Armadni Noviny |language=sk}}</ref>
| rowspan="2" style="text-align:center;" | ''17''
|-
|[[Slovak Police Force]]<ref>{{Cite web |url=https://www.czdefence.com/article/ceska-zbrojovka-will-arm-policemen-in-slovakia |title=Česká zbrojovka will arm policemen in Slovakia |date=3 December 2019 |website=CZ Defence |language=en}}</ref>
|-
| {{flag|Spain}}
| ''[[Unidad Especial de Intervención]]'' (UEI) group of [[Civil Guard (Spain)|Spanish Civil Guard]],<ref>{{Cite web |url=http://www.boinasverdes.org/militaria/uoes/uei.htm |title=UEI: Unidad Especial de Intervención |website=Veteranos Boinas Verdes |access-date=26 December 2008 |url-status=dead |archive-url=https://web.archive.org/web/20090503165027/http://www.boinasverdes.org/militaria/uoes/uei.htm |archive-date=3 May 2009}}</ref> 
[[Fuerza de Guerra Naval Especial|Special Naval Warfare Force]],<ref>{{Cite web |url=https://www.defensa.com/espana/pistolas-glock-recamaradas-para-9x19mm-parabellum-para-marina |title=Pistolas Glock, recamaradas para el 9x19mm Parabellum, para la Infantería de Marina española |trans-title=Glock pistols, chambered for the 9x19mm Parabellum, for the Spanish Marine Corps |first=Octavio |last=Díez Cámara |date=12 February 2020 |website=Noticias Defensa España |language=es}}</ref> [[Special Operations Command (Spain)|Army's Special Operations Command]]<ref>{{Cite web |url=https://www.defensa.com/espana/glock-g43-nueva-pistola-ejercito-tierra-espanol |title=Glock G43, la nueva pistola del Ejército de Tierra español |trans-title=Glock G43, the new pistol of the Spanish Army |first=Octavio |last=Díez Cámara |date=5 November 2020 |website=Noticias Defensa España |language=es}}</ref>
| style="text-align:center;"| ''17'', ''19'', ''43''
|-
| rowspan="2" | {{flag|Sweden}}
| [[Swedish Armed Forces]]<ref name="valpolini2009" /><ref>{{Cite web |url=http://www.mil.se/sv/Materiel-och-teknik/Vapen/Pistol-88/ |title=Pistol 88 |website=Försvarsmakten |language=sv |access-date=8 September 2008 |url-status=dead |archive-url=https://web.archive.org/web/20081010174257/http://www.mil.se/sv/Materiel-och-teknik/Vapen/Pistol-88/ |archive-date=10 October 2008}}</ref><ref>{{Cite web |url=http://www.soldf.com/pistol88.html |title=Pistol 88 / Glock 17/19 |first=Henrik |last=Svensk |date=5 January 2007 |website=SoldF |language=sv |access-date=24 July 2009 |url-status=live |archive-url=https://web.archive.org/web/20090720014342/http://www.soldf.com/pistol88.html |archive-date=20 July 2009}}</ref>
| style="text-align:center;"| ''17'' (''Pistol 88, 88C, 88C2''), ''19'' (''Pistol 88B, 88D'')
|-
|[[Swedish Police Authority]]<ref>{{Cite news |last1=Nyheter |first1=S. V. T. |last2=Stark |first2=Pontus |date=2023-04-20 |title=Polisen byter pistoler – Region mitt först ut |language=sv |work=SVT Nyheter |url=https://www.svt.se/nyheter/lokalt/uppsala/polisen-byter-pistoler-uppsala-forst-ut--6w15m9 |access-date=2023-11-25}}</ref>
|45
|-
| rowspan=2|{{flag|Switzerland}}
| Swiss Armed Forces: Military Police, [[Swiss Grenadiers]], [[Army Reconnaissance Detachment 10|ARD 10]], [[Parachute Reconnaissance Company 17|FSK-17]]<ref>{{Cite web |url=http://www.teamglock.com/news/release/swiss-army-selects-glock-as-new-service-pistol |title=Swiss Army Selects GLOCK As New Service Pistol |date=3 May 2011 |website=Team Glock |access-date=8 September 2011 |url-status=dead |archive-url=https://web.archive.org/web/20111006172914/http://www.teamglock.com/news/release/swiss-army-selects-glock-as-new-service-pistol |archive-date=6 October 2011}}</ref>
| style="text-align:center;"| ''17'', ''26''
|-
| Police (Gendarmerie) Cantonal of [[Geneva]]<ref>{{Cite web |url=http://www.geneve.ch/police/nos-services/gendarmerie/pri/ |title=Gendarmerie : Groupe de Policiers Rollers Inline |website=l'Etat de Genève |language=fr |access-date=29 October 2009 |url-status=dead |archive-url=https://web.archive.org/web/20091014235450/http://www.geneve.ch/police/nos-services/gendarmerie/pri/ |archive-date=14 October 2009}}</ref>
| style="text-align:center;"| ''19''
|-
| {{flag|Taiwan}}
| Various criminal investigation bureaus outside major cities<ref>{{Cite web |url=http://www.storm.mg/article/73231 |title=淘汰20年骨董槍 警用手槍5年內全面換新 |trans-title=Eliminate 20-year-old guns and replace police pistols with new ones within 5 years |date=9 November 2015 |website=Storm Media Group |language=zh |url-status=live |archive-url=https://web.archive.org/web/20151114074641/http://www.storm.mg/article/73231 |archive-date=14 November 2015}}</ref>
| style="text-align:center;"| ''19''
|-
| {{flag|Thailand}}
| [[Royal Thai Police]] at least 2,238 G19,{{sfnp|Kasler|1992|p=79}} G17 used by [[Arintharat 26]], [[Naresuan 261 Counter-Terrorism Unit|Naresuan 261]] units. G17 and G19 used by [[Royal Thai Army]]<ref>{{Cite web |url=https://sites.google.com/site/faminacgm/yuththopkrn-thi-praca-kar-nipa/xawuth-pra-cak/xawuth-praca-kay-hlak |title=อาวุธประจำกาย และอาวุธธประจำกายทหารราบ |trans-title=Personal weapons of the Infantry |website=Thai Army |language=th |url-status=dead |archive-url=https://web.archive.org/web/20190324045542/https://sites.google.com/site/faminacgm/yuththopkrn-thi-praca-kar-nipa/xawuth-pra-cak/xawuth-praca-kay-hlak |archive-date=24 March 2019}}</ref>
| style="text-align:center;"| ''17'', ''19''
|-
| {{flag|Timor Leste}}
| [[National Police of East Timor]]<ref name="2010 report">{{Cite book |url=http://www.smallarmssurvey.org/fileadmin/docs/C-Special-reports/SAS-SR12-Timor-Leste-Armed-Violence-Assessment-Final-Rep.pdf |editor1-last=Muggah |editor1-first=Robert |editor2-last=LeBrun |editor2-first=Emile |name-list-style=amp |title=Timor-Leste Armed Violence Assessment Final Report |date=October 2010 |publisher=[[Small Arms Survey]] |isbn=978-2-940415-43-4 |series=Special Report No. 12 |page=17 |access-date=30 August 2018 |archive-url=https://web.archive.org/web/20170505060031/http://www.smallarmssurvey.org/fileadmin/docs/C-Special-reports/SAS-SR12-Timor-Leste-Armed-Violence-Assessment-Final-Rep.pdf |archive-date=5 May 2017 |url-status=dead}}</ref>
| style="text-align:center;"| ''19''
|-
|{{flag|Tunisia}}
| [[Unité Spéciale – Garde Nationale]]<ref>{{Cite web |url=https://www.tactical-life.com/lifestyle/military-and-police/glocks-fighting-terror-in-tunisia/ |title=International Glocks: Fighting Terror in Tunisia |date=18 March 2016 |website=Tactical Life}}</ref>
| style="text-align:center;"| ''17'', ''34''
|-
|{{TUR}}
|Used by [[Special Forces Command (Turkey)|Special Forces Command]].<ref>{{Cite web |url=https://special-ops.org/bordo-bereliler-turkey/ |title=Bordo Bereliler: The difficult we do immediately, the impossible takes a little longer |date=6 October 2012 |website=Special Ops |language=en-US |access-date=10 June 2021}}</ref>
| style="text-align:center;"| ''17'', ''19''
|-
| rowspan=1|{{flag|Ukraine}}
| [[Ukrainian Armed Forces]]<ref>{{cite web | url=https://www.canada.ca/en/department-national-defence/campaigns/canadian-military-support-to-ukraine.html | title=Canadian military support to Ukraine | date=6 May 2022 }}</ref>
| style="text-align:center;"| ''17''
|-
| rowspan=4|{{flag|United Kingdom}}
| [[British Armed Forces]]<ref>{{Cite web |url=https://www.bbc.co.uk/news/uk-20978842 |title=Glock 17 9mm pistols replace Browning for UK forces |date=11 January 2013 |website=[[BBC News]] |access-date=11 January 2013 |url-status=live |archive-url=https://web.archive.org/web/20130111084435/http://www.bbc.co.uk/news/uk-20978842 |archive-date=11 January 2013}}</ref>
| style="text-align:center;"| ''17'' (''L131A1''),<ref name="RAF_Aircraft_and_Weapons">{{Cite web |url=http://www.raf.mod.uk/rafcms/mediafiles/E28BE76F_5056_A318_A833EB4C9A735AD8.pdf |title=Royal Air Force Aircraft and Weapons: Glock - L131A1 |page=84 |website=Royal Air Force |access-date=1 September 2013 |url-status=dead |archive-url=https://web.archive.org/web/20170710150246/https://www.raf.mod.uk/rafcms/mediafiles/E28BE76F_5056_A318_A833EB4C9A735AD8.pdf |archive-date=10 July 2017}}</ref><ref name="THPS_User_Information">{{Cite web |url=http://www.army.mod.uk/documents/general/Tactical_hearing.pdf |title=Tactical Hearing Protection System (THPS) User Information |website=[[Ministry of Defence (United Kingdom)|Ministry of Defence]] |access-date=14 October 2017 |url-status=dead |archive-url=https://web.archive.org/web/20171014233713/http://www.army.mod.uk/documents/general/Tactical_hearing.pdf |archive-date=14 October 2017}}</ref> ''17T'' (''L132A1''), ''19'' (''L137A1'')<ref name="THPS_User_Information"/>
|-
| [[Specialist Firearms Command]] of the [[Metropolitan Police]]<ref>{{Cite web |url=http://www.met.police.uk/co19/armed_response.htm |title=Central Operations, Specialist Firearms unit (CO19) |website=Metropolitan Police Service |access-date=24 July 2009 |url-status=dead |archive-url=https://web.archive.org/web/20090905024146/http://www.met.police.uk/co19/armed_response.htm |archive-date=5 September 2009}}</ref>
| style="text-align:center;"| ''17'', ''17M'', ''19'', ''19M'', ''26''<ref>{{cite news |url=http://www.timesonline.co.uk/tol/news/politics/article7149078.ece |title=The Times |access-date=12 June 2010}}{{dead link|date=May 2016|bot=medic}}{{cbignore|bot=medic}}</ref>
|-
| [[Police Scotland]]<ref>{{Cite web |url=http://www.psni.police.uk/...nnual_report_2003-2004-text.doc |title=2004 Annual Report |website=Police Service of Northern Ireland |access-date=20 January 2009}}{{dead link|date=May 2016|bot=medic}}{{cbignore|bot=medic}}</ref>
| style="text-align:center;"| ''17''
|-
| [[Police Service of Northern Ireland]]<ref>{{Cite web |url=http://www.u.tv/News/New-guns-to-be-issued-to-PSNI/0ffe9630-0fec-4129-9708-0b4fdcbbbbd4 |date=25 October 2002 |title=New guns to be issued to PSNI |website=UTV News |access-date=29 June 2010 |url-status=dead |archive-url=https://web.archive.org/web/20110725010743/http://www.u.tv/News/New-guns-to-be-issued-to-PSNI/0ffe9630-0fec-4129-9708-0b4fdcbbbbd4 |archive-date=25 July 2011}}</ref>
| style="text-align:center;"| ''17''
|-
| rowspan="14" |{{flag|United States}}
| [[USSOCOM]];<ref name="mk27 nsn"/><ref name="mk26 nsn"/><ref name="mk26 NDIA"/><ref name="Guns of Delta"/> [[United States Marine Forces Special Operations Command]];<ref>{{cite web |url=http://kitup.military.com/2015/02/marines-operators-choose-glocks.html |title=Marines Allow Operators to Choose Glocks over MARSOC .45s |date=19 February 2015 |website=Military.com |url-status=live |archive-url=https://web.archive.org/web/20150222201224/http://kitup.military.com/2015/02/marines-operators-choose-glocks.html |archive-date=22 February 2015}}</ref> [[United States Navy SEALs]]<ref>{{Cite web |url=http://www.bluesheepdog.com/2016/01/06/glocks-n-seals/ |title=U.S. Navy SEALS Switch to Glock 19! |date=6 January 2016 |website=Bluesheepdog |access-date=13 April 2016 |url-status=live |archive-url=https://web.archive.org/web/20160403062604/http://www.bluesheepdog.com/2016/01/06/glocks-n-seals/ |archive-date=3 April 2016}}</ref> 
| style="text-align:center;"| ''19'', ''19M'', ''26''
|-
| [[U.S. Customs and Border Protection]];<ref>{{Cite press release |url=https://www.cbp.gov/newsroom/national-media-release/cbp-awards-contract-duty-handguns |title=CBP Awards Contract for Duty Handguns |date=9 April 2019 |publisher=U.S. Customs and Border Protection |location=Washington, DC |access-date=1 June 2019 |author=<!--Staff writer(s); no by-line.-->}}</ref><ref>{{Cite web |url=https://www.militarytimes.com/off-duty/gearscout/irons/2019/04/12/shhhglock-just-released-a-new-glock-without-really-saying-anything-g47/ |title=Shhh... Glock just released a new Glock without really saying anything (G47) |last=D'Costa |first=Ian |date=12 April 2019 |website=MilitaryTimes.com |publisher=Sightline Media Group |access-date=1 June 2019 |quote=Officially designated the Glock 47 (or G47), the gun is a functional blend of a few of Glock's other products which the company hopes will give CBP agents a distinct advantage when in the field[.]}}</ref> [[United States Coast Guard]]<ref>{{Cite web |url=https://www.upi.com/Defense-News/2020/09/30/Coast-Guard-fields-new-Glock-pistols/6401601482294/ |title=Coast Guard fields new Glock pistols |date=2020-09-30 |website=UPI |language=en}}</ref> (Dept. of Homeland Security)
| style="text-align:center;"|  ''19'', ''26'', ''47''; ''19''
|-
| [[Federal Bureau of Investigation]];<ref>{{Cite journal |url=https://www.thefreelibrary.com/The+Glock+22%3a+America%27s+best-selling+police+pistol.-a0179532693 |title=The Glock 22: America's best-selling police pistol |last=Ayoob |first=Massad |author-link=Massad Ayoob |date=1 July 2008 |journal=Guns Magazine |pages=14–17}}</ref> [[Bureau of Alcohol, Tobacco, Firearms and Explosives]];<ref>{{Cite magazine |url=http://www.policemag.com/channel/weapons/news/2010/09/08/atf-gives-agents-choice-of-40-caliber-glocks.aspx |title=ATF Gives Agents Choice of .40-Caliber Glocks |date=8 September 2010 |magazine=Police |access-date=24 January 2015 |url-status=live |archive-url=https://web.archive.org/web/20150128112629/http://www.policemag.com/channel/weapons/news/2010/09/08/atf-gives-agents-choice-of-40-caliber-glocks.aspx |archive-date=28 January 2015}}</ref> [[Drug Enforcement Administration]]<ref>{{Cite magazine |url=http://findarticles.com/p/articles/mi_m0BTT/is_172_28/ai_n6204145 |title=9mm Dead? |last=Ayoob |first=Massad |date=December 2004 |magazine=[[American Handgunner]] |access-date=24 July 2009 |url-status=dead |archive-url=https://web.archive.org/web/20090701140712/http://findarticles.com/p/articles/mi_m0BTT/is_172_28/ai_n6204145/ |archive-date=1 July 2009}}</ref> (Dept. of Justice)
|style="text-align:center;"| ''17M'', ''19'', ''19M'', ''22'', ''23'', ''27''
|-
| [[Alaska State Troopers]]<ref>{{Cite magazine |url=http://www.policemag.com/channel/weapons/news/2013/05/09/alaska-troopers-get-gen4-glock-pistols.aspx |title=Alaska Troopers Get Gen4 Glock Pistols |date=May 9, 2013 |magazine=Police |access-date=17 February 2018 |url-status=live |archive-url=https://web.archive.org/web/20180217083504/http://www.policemag.com/channel/weapons/news/2013/05/09/alaska-troopers-get-gen4-glock-pistols.aspx |archive-date=17 February 2018}}</ref>
| style="text-align:center;"| ''22''
|-
| [[Baltimore City Police Department]]<ref>{{cite web| url = https://baltimorepolicemuseum.com/en/component/content/article/482-bpd-weapons| title = Baltimore Police Weapons| last = Driscoll| first = Kenny| date = 29 December 2022
| website = Baltimore Police Museum| access-date = 27 January 2024}}</ref>
| style="text-align:center;"| ''17'', ''22''
|-
| [[Colorado State University]] Police Department<ref>{{Cite web |url=https://police.colostate.edu/wp-content/uploads/sites/85/2020/03/305-Firearms.pdf |title=Colorado State University Police Department Policy Manual, Policy 305 |website=police.colostate.edu}}</ref>
| style="text-align:center;"| ''17'', ''19''
|-
| [[Kansas Highway Patrol]]<ref>{{Cite web |url=https://kansashighwaypatrol.org/DocumentCenter/View/946/2018-annual-report-PDF- |title=2018 Annual Report |website=Kansas Highway Patrol}}</ref>
| style="text-align:center;"| ''17''
|-
| [[Kentucky State Police]] SRT
<ref>{{Cite web |url=http://www.personaldefenseworld.com/2014/07/kentucky-state-police-srt-glocks/#kentucky-police-glocks-1 |title=Kentucky State Police SRT GLOCKs |date=3 July 2014 |website=Personal Defense World |access-date=12 February 2015 |url-status=live |archive-url=https://web.archive.org/web/20150212084753/http://www.personaldefenseworld.com/2014/07/kentucky-state-police-srt-glocks/#kentucky-police-glocks-1 |archive-date=12 February 2015}}</ref> Trigg County Sheriff's Office
| style="text-align:center;"| ''27'', ''35''
|-
| [[New York City Police Department]];<ref>{{Cite web |url=https://www.thefirearmblog.com/blog/2017/11/30/nypd-set-retire-last-revolvers/ |title=NYPD Set to Retire Last of its Revolvers |date=30 November 2017 |website=The Firearm Blog |access-date=6 January 2019 |url-status=live |archive-url=https://web.archive.org/web/20180719024523/https://www.thefirearmblog.com/blog/2017/11/30/nypd-set-retire-last-revolvers/ |archive-date=19 July 2018 |quote=The internal memo states that by 31 August 2018 all of the department's officers must be equipped with one of three duty pistols: the Glock 17 (gen 4), Glock 19 (gen 4) or the SIG Sauer P226 – all with the infamous 12lb triggers. The transition is slated to begin in January next year with three day transitional courses on semi-automatics scheduled for officers more familiar with revolvers.}}</ref> [[New York State Police]];<ref>{{Cite web |url=https://www.nyspnews.com/images/10004/2018%20Report%20Final(2).pdf |title=Annual Report 2018 |page=6 |website=New York State Police |quote=In 2018, the Academy Firearms Training Unit was responsible for the seamless transition to a new weapons system for the Division of State Police. Sworn members were trained on a new Glock 45 caliber duty sidearm, ammunition, holster and TLR weapons light system.}}</ref> [[New York State University Police]]<ref>{{Cite web |url=http://police.albany.edu/PolicyManualMarch2018.pdf |title=General Order 1 Law Enforcement Role and Authority |website=New York State University Police at Albany |access-date=26 March 2019 |url-status=live |archive-url=https://web.archive.org/web/20190326024726/http://police.albany.edu/PolicyManualMarch2018.pdf |archive-date=26 March 2019 |quote=The Department Issued Duty Weapon is a Glock .40 S & W. Uniformed patrol staff are issued model 22 pistols, Plain Clothes staff are issued model 23 or 27 pistols depending on personal preference, and subject to qualification and Lead Firearms Instructor approval. Modification to the model or weapon issued to an individual member outside of this criteria is subject to the approval of the Chief of Police, or their designee, and the Lead Firearms Instructor.}}</ref>
| style="text-align:center;" | ''17'', ''19'', ''21'', ''22'', ''23'', ''27'' 
|-
| [[New Jersey State Police]];<ref>{{Cite web |url=http://nj1015.com/state-police-sue-gun-maker-over-faulty-pistols/ |title=State Police sue gun maker over faulty pistols |last=Alexander |first=Dan |date=19 May 2017 |website=New Jersey 101.5 |access-date=6 January 2019 |url-status=live |archive-url=https://web.archive.org/web/20190107072507/http://nj1015.com/state-police-sue-gun-maker-over-faulty-pistols/ |archive-date=7 January 2019 |quote=NJSP instead selected the Generation 4 Glock 19 as its new weapon, and also had to order new holsters.}}</ref> [[Port Authority of New York and New Jersey Police Department|Port Authority Police Department]]<ref>{{Cite web |url=https://www.personaldefenseworld.com/2017/02/glock-19/ |date=24 February 2017 |title=Reliable Nine: Examining the Popularity of the Glock 19 |website=Personal Defense World |access-date=7 January 2019 |url-status=live |archive-url=https://web.archive.org/web/20190107124519/https://www.personaldefenseworld.com/2017/02/glock-19/ |archive-date=7 January 2019 |quote=The Port Authority Police chose the Glock 19 as standard issue, and the Housing Authority and Transit Authority police were issued Glock 19s when they were absorbed into the NYPD several years ago.}}</ref>
| style="text-align:center;" | ''19''
|-
| [[South Carolina Highway Patrol]]<ref>{{cite web|url=https://www.personaldefenseworld.com/2013/04/bridging-the-45-gap/|title=Bridging the .45 GAP|date=26 April 2013|website=Personaldefenseworld.com|access-date=27 March 2019|archive-date=26 March 2019|archive-url=https://web.archive.org/web/20190326191451/https://www.personaldefenseworld.com/2013/04/bridging-the-45-gap/|url-status=live}}</ref> 
| style="text-align:center;" | ''17M''
|-
| [[Dallas Police Department]]<ref name="abc13.com">{{Cite web |url=https://abc13.com/hpd-rookies-buy-own-guns-glock-17-houston-police-department-why-forces-officers-to/12372371/ |title=HPD officers have to spend $2K to buy own guns, bullets, handcuffs |first=Brooke |last=Taylor |date=October 25, 2022 |website=[[KTRK-TV|ABC-13]]}}</ref> 
| style="text-align:center;"| ''17'', ''19'' 
|-
| [[List of law enforcement agencies in Oregon|Douglas County Sheriff's Department]], Douglas County Oregon<ref>{{Cite book |last=Comus |first=Steve |title=The Gun Digest Book of 9mm Handguns |publisher=DBI Books, Inc. |year=1993 |isbn=0873491491 |pages=134–137}}</ref>
| style="text-align:center;"| ''18''
|-
| [[Houston Police Department]]<ref name="abc13.com"/>
| style="text-align:center;"| ''17''
|-
| {{flag|Uruguay}}
| [[Military of Uruguay|Uruguayan National Army]]<ref>{{cite web |url=http://www.janes.com/article/12201/uruguay-to-produce-glock-pistols |title=Uruguay to produce Glock pistols |first=Patricia |last=Samfelt |date=28 April 2013 |website=IHS Jane's Defence Weekly |url-status=dead |archive-url=https://web.archive.org/web/20131109145822/http://www.janes.com/article/12201/uruguay-to-produce-glock-pistols |archive-date=9 November 2013}}</ref>
| style="text-align:center;"| ''17''
|-
| rowspan=2|{{flag|Vatican City}}
| [[Pontifical Swiss Guard|Swiss Guard]]<ref name="Rogoway">{{Cite web |url=https://foxtrotalpha.jalopnik.com/the-pope-has-a-small-but-deadly-army-of-elite-warriors-1733268646 |title=The Pope Has A Small But Deadly Army Of Elite Warriors Protecting Him |last=Rogoway |first=Tyler |date=28 September 2015 |website=[[Jalopnik]] |access-date=26 February 2019 |url-status=live |archive-url=https://web.archive.org/web/20190226173259/https://foxtrotalpha.jalopnik.com/the-pope-has-a-small-but-deadly-army-of-elite-warriors-1733268646 |archive-date=26 February 2019}}</ref>
| style="text-align:center;"| ''19''
|-
| [[Corps of Gendarmerie of Vatican City|Gendarmerie of Vatican City]]<ref name="Rogoway" />
| style="text-align:center;"| ''17''
|-
|{{flag|Venezuela}}
|[[Venezuelan Armed Forces]]{{sfnp|Kasler|1992|p=79}}<ref name="valpolini2009" />
| style="text-align:center;"| ''17''
|-
| {{flag|Vietnam}}
| [[Mobile Police Command|Mobile Police]]
| style="text-align:center;"| ''19''<ref>or ''17''</ref>
|-
| {{flag|Yemen}}
| [[Military of Yemen]]<ref>{{Cite book |last=McNab |first=Chris |title=Glock: The World's Handgun |publisher=Amber Books Ltd |year=2015 |isbn=978-1-782743026 |chapter=The Glock in Military Use}}</ref>
| style="text-align:center;"| ''19''
|}
<!--READ note at top of section. Only cited entries in this section.-->

==Criminal use==
A 2014 report by the [[Chicago Police Department]] revealed that Glock pistols are the third most traced handgun, coming after [[Smith & Wesson]] and [[Sturm, Ruger & Co.|Sturm, Ruger & Co]].<ref>{{Cite web |last=Smith |first=Lee |date=2016-01-07 |title=Graphic: The Most Popular Crime Guns in Chicago, Ranked |url=https://www.thetrace.org/2016/01/chicago-crime-guns-chart/ |access-date=2023-12-28 |website=The Trace |language=en-us}}</ref>

Glock pistols have been used in mass shootings in the United States including the [[Luby's shooting|1991 Luby's shooting]], the 2007 [[Virginia Tech shooting]], the [[2011 Tucson shooting]], the [[2012 Aurora, Colorado shooting|2012 Aurora shooting]], the 2012 [[Sandy Hook Elementary School shooting]], the 2015 [[Charleston church shooting]], the 2016 [[Orlando nightclub shooting]], the [[Pittsburgh synagogue shooting]], and the [[2022 New York City Subway attack]]. Experts on [[Gun law in the United States|gun control]], [[mass shooting]]s, and defense training have cited factors such as reliability, ease of use, and commonness. The criminal use of handguns including Glocks has led to calls for increased [[gun control in the United States]].<ref>{{Cite news |url=https://www.washingtonpost.com/national/glock-semiautomatic-pistol-links-recent-mass-shootings/2012/07/20/gJQAINYwyW_story.html |title=Glock semiautomatic pistol links recent mass shootings |last=Horwitz |first=Sari |date=20 July 2012 |newspaper=[[The Washington Post]] |access-date=17 February 2019 |url-status=live  |archive-url=https://web.archive.org/web/20190218021454/https://www.washingtonpost.com/national/glock-semiautomatic-pistol-links-recent-mass-shootings/2012/07/20/gJQAINYwyW_story.html |archive-date=18 February 2019}}</ref><ref>{{Cite web |url=https://news.vice.com/en_us/article/gy9nj4/glock-pistol-omar-mateen-orlando-mass-shooting |title=Glock pistols are the overlooked weapon in American mass shootings |last=Alvatado |first=Francisco |date=21 June 2016 |website=[[Vice (magazine)|Vice]] |access-date=17 February 2019 |url-status=live |archive-url=https://web.archive.org/web/20190218021451/https://news.vice.com/en_us/article/gy9nj4/glock-pistol-omar-mateen-orlando-mass-shooting |archive-date=18 February 2019}}</ref><ref>{{Cite news |url=https://www.postandcourier.com/politics/a-year-after-the-parkland-shooting-a-new-push-to/article_0bf6b132-305e-11e9-a495-6b03f67fbcdb.html |title=A year after the Parkland shooting, a new push to close the 'Charleston loophole' |last=Byrd |first=Caitlin |date=14 February 2019 |newspaper=The Post and Courier |access-date=17 February 2019 |url-status=live |archive-url=https://web.archive.org/web/20190218021317/https://www.postandcourier.com/politics/a-year-after-the-parkland-shooting-a-new-push-to/article_0bf6b132-305e-11e9-a495-6b03f67fbcdb.html |archive-date=18 February 2019}}</ref> This common usage, however, has been described by [[Glock: The Rise of America's Gun|Paul M. Barrett]] to be a result of Glock's overall popularity and market presence in the US and that "this level of violence isn't necessarily tied to a particular[,] to a brand". In the late 80s, gun control advocates had similarly focused on Glock pistols because of their magazine capacity (compared to six shot [[revolver]]s), but also their "futuristic, distinct appearance". They were singled out for restriction by some jurisdictions and were branded the "hijacker's special" based on the false assumption that they could bypass [[Airport security|airport metal detectors]] because of their polymer frame. This was refuted in Congressional hearings by the [[Bureau of Alcohol, Tobacco, Firearms and Explosives|ATF]], [[Federal Aviation Administration|FAA]], and other organizations responsible for airline security, which proved embarrassing for the bans' advocates and provided significant publicity for Glock.<ref name="barrett interview">{{cite web |url=https://lareviewofbooks.org/article/happiness-is-a-warm-glock-paul-barrett-on-americas-gun/ |title=Happiness Is A Warm Glock: Paul Barrett on America's Gun |last1=Randol |first1=Shaun |date=September 21, 2012 |website=Los Angeles Review of Books |access-date=5 June 2022 |url-status=live |archive-url=https://web.archive.org/web/20200804205754/https://lareviewofbooks.org/article/happiness-is-a-warm-glock-paul-barrett-on-americas-gun/ |archive-date=4 August 2020}}</ref>{{Better source needed|reason=An interview is insufficiently reliable to describe the result and impact of the hearings|date=September 2022}} In April 2022, Ilene Steur, a survivor of the 2022 NYC subway attack, sued Glock and its Austrian parent company for compensation for her physical injuries and emotional pain.<ref>{{Cite web |url=https://www.reuters.com/world/us/new-york-subway-shooting-survivor-sues-gun-manufacturer-glock-2022-06-01/ |title=New York subway shooting survivor sues gun manufacturer Glock |date=2022-06-01 |language=en |work=[[Reuters]]|access-date=2022-06-02 |url-status=live |archive-url=https://web.archive.org/web/20220607212649/https://www.reuters.com/world/us/new-york-subway-shooting-survivor-sues-gun-manufacturer-glock-2022-06-01/ |archive-date=7 June 2022}}</ref> Glock pistols have also been used in mass shootings elsewhere in the world, including the 2002 [[Erfurt massacre]], the 2001 [[Nepalese royal massacre]], the [[2011 Norway attacks]], the [[2016 Munich shooting]], the [[2023 Prague shooting]], and the killings commited by [[Viktor Kalivoda]] in 2005.

==See also==
* [[Glock Ges.m.b.H.#Entrenching tool|Glock entrenching tool]]
* [[Glock knife]]

==References==
{{Reflist}}

===Bibliography===
{{Refbegin}}
*{{Cite book |last=Kasler |first=Peter Alan |date=1992 |title=Glock: The New Wave in Combat Handguns |location=Boulder, Colorado |publisher=[[Paladin Press]] |isbn=978-0-873646499}}
* {{cite book |last=Kokalis |first=Peter |title=Weapons Tests and Evaluations: The Best of Soldier of Fortune |location=Boulder, Colorado |publisher=Paladin Press |date=2001 |isbn=978-1-581601220}}
*{{Cite encyclopedia |editor-last=Woźniak |editor-first=Ryszard |title=Encyklopedia najnowszej broni palnej |trans-title=Encyclopedia of the Newest Firearms |language=pl |publisher=[[Bellona Publishing House|Bellona]] |date=2001 |volume=Tom 2 (G-Ł)}}
{{Refend}}

== Further reading ==
* {{Cite book |last=Boatman |first=Robert H. |year=2002 |title=Living with Glocks: The Complete Guide to the New Standard in Combat Handguns |location=Boulder, Col. |publisher=Paladin Press |isbn=978-1-581603408}}
* {{Cite book |last=Taylor |first=Robin |year=2005 |title=The Glock in Competition: A Shooter's "How To" Guide |edition=2nd |location=Bellingham, WA |publisher=Taylor Press |isbn=978-0-966251746}}

== External links ==
{{Commons category}}
{{Wikiquote}}
* {{Official website|https://eu.glock.com/en}}
* [https://glockcollectorsassociation.org/ Glock Collectors Association]
* [http://teracube.net/gc/ Glock Charts at Teracube.net - models, specifications and dimensions]

{{Modern US Infantry Weapons}}
{{Authority control}}

[[Category:9mm Parabellum semi-automatic pistols]]
[[Category:9mm Parabellum submachine guns]]
[[Category:10mm Auto semi-automatic pistols]]
[[Category:.357 SIG semi-automatic pistols]]
[[Category:.380 ACP semi-automatic pistols]]
[[Category:.40 S&W semi-automatic pistols]]
[[Category:.45 ACP semi-automatic pistols]]
[[Category:.45 GAP semi-automatic pistols]]
[[Category:.22 LR pistols]]
[[Category:Glock| ]]
[[Category:Machine pistols]]
[[Category:Semi-automatic pistols of Austria]]
[[Category:Simple blowback firearms]]
[[Category:Short recoil firearms]]
[[Category:Weapons and ammunition introduced in 1982]]
[[Category:Post–Cold War weapons of Myanmar]]