Glock 19

Austrian manufacturer Glock GmbH developed the Glock 19 as a compact variant of its original handgun, the Glock 17. Designed by company founder Gaston Glock, the base design entered Austrian military service in 1982. First produced in 1988, the Glock 19 was engineered primarily for military and law enforcement applications, functioning as a reduced-size version of the standard sidearm. To preserve the operational reliability of the short recoil system, the manufacturer maintained the same slide mass as the parent model.

The firearm utilizes a short recoil-operated, locked-breech system with a vertically tilting barrel that locks into the slide's ejection port. The frame is constructed from Polymer 2, a nylon-based synthetic material resistant to temperature extremes and chemical exposure, while the slide is milled from ordnance-grade steel. The metal components undergo a nitriding surface treatment to resist corrosion and wear. The trigger system relies on a proprietary three-stage automatic safety mechanism, consisting of trigger, firing pin, and drop safeties. Ergonomic developments across production generations introduced interchangeable backstraps, a reversible magazine release, a flared magazine well, and ambidextrous slide stop levers. Later models feature a revised style of polygonal rifling.

The handgun is deployed by military forces and police agencies globally, including the United States Navy SEALs, the French Armed Forces, and the United States Secret Service. In United States military service, the Gen 4 MOS variant is designated as the Mk 27 MOD 2. Derivative models include the Glock 19M, designed for the Federal Bureau of Investigation with a rounded slide profile and conventional rifling, which was fielded by the United States Marine Corps as the M007. The Glock 19X features a coyote brown finish, combining the compact slide with a full-size frame. Other variants include the Canadian market edition featuring a longer barrel, a rimfire model utilizing a simple blowback mechanism, and the Glock 46, which incorporates a rotating barrel breech lock system. Additionally, the Glock 49 crossover configuration pairs the compact frame with a longer slide assembly.