.45 Glock Automatic Pistol

The .45 Glock Automatic Pistol, or .45 G.A.P., is a pistol cartridge created in 2002 by ammunition engineer Ernest Durham for Glock, a handgun manufacturer based in Deutsch-Wagram, Austria. Glock is named after the company's founder, Gaston Glock who designed one of the world's best line of polymer-framed pistols. The .45 G.A.P. was created out of the need for a cartridge that carries the same power and accuracy of the .45 Automatic Colt Pistol in a smaller and more compressed hand gun. The .45 G.A.P is used by the U.S. Army from 2003 up to the present and it is also sold commercially. It has a rimless and straight case type with a bullet diameter of 11.5mm, case length of 19.2 mm and overall length of 27.2 mm.

The cartridge was engineered to be utilized in the medium frame sized GLOCK 37 pistol. This type of pistol is best for national law enforcement agencies. It carries less recoiling capacity than its precedent .45 ACP though it possesses more powerful ballistic potentials than the said cartridge. Because almost all automatic pistols have cartridges in their grip, the more compressed .45 G.A.P. provides a smaller grip diameter to its shooters, which enables them to easily clutch the handle, even of a double-column pistol.

The cartridge utilizes a 15 g bullet and has muzzle velocity of 260 meters per second. It has the similar firing capacity of a .45 S&W revolver cartridge, although its shortness makes it slightly less powerful than the S&W loads.