In firearms terminology, an action is the functional mechanism of a breech-loading firearm that handles the ammunition cartridges, or the method by which that mechanism works. Actions are technically not present on muzzleloaders, as all those are single-shot firearms with a closed off breech with the powder and projectile manually loaded from the muzzle. Instead, the muzzleloader ignition mechanism is referred to as the lock.
The Browning Hi-Power is a single-action, semi-automatic pistol available in the 9×19mm Parabellum and .40 S&W calibers. It was based on a design by American firearms inventor John Browning, and completed by Dieudonné Saive at FN Herstal. Browning died in 1926, several years before the design was finalized. FN Herstal named it the "High Power" in allusion to the 13-round magazine capacity, almost twice that of other designs at the time, such as the Walther P38 or Colt M1911.
A semi-automatic pistol is a handgun that automatically ejects and loads cartridges in its chamber after every shot fired. Only one round of ammunition is fired each time the trigger is pulled, as the pistol's fire control group disconnects the trigger mechanism from the firing pin/striker until the trigger has been released and reset.
The Beretta 92G-SD and 96G-SD Special Duty handguns are semi-automatic, locked-breech delayed recoil-operated, double/single-action pistols, fitted with the heavy, wide Brigadier slide, chambered for the 9×19mm Parabellum cartridge (92G-SD) and the .40 S&W cartridge (96G-SD), framed with the addition of the tactical equipment rail, designed and manufactured by Beretta.
The Makarov pistol or PM is a Soviet semi-automatic pistol. Under the project leadership of Nikolay Fyodorovich Makarov, it became the Soviet Union's standard military and Militsiya side arm in 1951.
The Beretta 21A Bobcat is a semi-automatic pocket pistol designed by Beretta in Italy. Production began in the late 1984, solely in the Beretta U.S.A. facility in Accokeek, Maryland. It is a further development of the Beretta Model 20, whose production ended in 1985.
The Desert Eagle or simply Deagle is a single-action, gas-operated, semi-automatic pistol capable of chambering the .50 Action Express, the largest centerfire cartridge of any magazine-fed, self-loading pistol and famous for other large caliber chamberings.
The SIG Sauer P220 is a semi-automatic pistol designed in 1975 by the SIG Arms AG division of Schweizerische Industrie Gesellschaft, and produced by J. P. Sauer & Sohn, in Eckernförde. It is currently manufactured by both SIG Sauer companies: SIG Sauer GMBH, of Eckernförde, Germany; and SIG Sauer, Inc., of New Hampshire, United States.
The USP is a semi-automatic pistol developed in Germany by Heckler & Koch GmbH (H&K) as a replacement for the P7 series of handguns.
The Heckler & KochP7 is a German 9×19mm semi-automatic pistol designed by Helmut Weldle and produced from 1979 to 2008 by Heckler & Koch GmbH (H&K). The P7M13, a variant of the P7 with a double-stack magazine, was produced until 2000.
The Vz. 50 is a Czechoslovakian made double-action, semi-automatic pistol. Vz is an abbreviation of the Czech term "vzor" meaning model.
The Steyr GB is a double-action 9×19mm Parabellum caliber, large-framed semi-automatic pistol employing a gas-delayed blowback action. As such the GB abbreviation stands for Gasbremse. It was designed in 1968, intended as a replacement for older handguns in Austrian military service.
The Smith & Wesson SW series, most commonly referred to as the Smith & Wesson Sigma, was Smith & Wesson's first venture into using synthetic materials in pistol construction, with high-strength polymer material for the frame.
Glock is a brand of polymer-framed, short-recoil-operated, striker-fired, locked-breech semi-automatic pistols designed and produced by Austrian manufacturer Glock Ges.m.b.H.
FN HP-DA is a 9mm semi-automatic pistol developed by Belgian Fabrique Nationale arms factory in Herstal. In North American markets, it was marketed as the Browning BDA and is also referred to as Browning DA and Browning Hi-Power BDA.
The P-83 Wanad is a single-action and double-action Polish semi-automatic pistol, chambered for the 9×18mm Makarov cartridge and designed by Ryszard Chełmicki and Marian Gryszkiewicz of the state research institute Ośrodek Badawczo-Rozwojowy in Radom. The P-83 succeeded the P-64 as the sidearm for the Polish Army and police. The P-83 is no longer used by both the Polish police but remains in use by some units of the Polish military. It has been replaced by Walther P99 pistols in Police service and partially by the FB VIS 100 and WIST-94 pistols in the Polish military.
The Type 77 is a 7.62×17 mm Type 64 caliber semi-automatic pistol in service with all branches of the People's Liberation Army (PLA) of the People's Republic of China, People's Armed Police and various Chinese police forces. The Type 77 has been the main sidearm of the PLA for over two decades and is slowly being phased out by the QSZ-92 pistol in both military and police service but is still in widespread use across the country amongst second line military units and provincial police forces. Beginning in 1990, several variants of the Type 77 were developed for the international market.
The HK P9 is a semi-automatic pistol from Heckler & Koch in 9×19mm Parabellum, .45 ACP, and 7.65×21mm Parabellum and the first to use a variation of H&K's roller delayed blowback system in a pistol format and polygonal rifling now common in H&K designs.
The Arsenal Firearms AF2011-A1 is a double-barreled, semi-automatic pistol of Italian origin. The weapon is a derivative of the M1911 pistol and the majority of internal parts including the firing pins, firing pin plates, sear groups, springs, recoil rods, and mainspring housings are interchangeable with standard M1911 replacement parts. The purpose of the AF2011A1 pistol is to increase the ballistic capability of .45 ACP without the need to develop a more powerful round. The AF2011A1 has its roots in the Grieco pistol that also came with double barrels for the same purpose.
The Walther CCP is a delayed blowback semi-automatic pistol developed by Carl Walther Sportwaffen for the concealed carry civilian market.
