

It is popular with civilian shooters in competitive events such as the International Defensive Pistol Association and International Practical Shooting Confederation. The pistol was widely copied, and this operating system rose to become the preeminent type of the 20th century and of nearly all modern centerfire pistols. ĭesigned by John Browning, the M1911 is the best-known of his designs to use the short recoil principle in its basic design. 45, Automatic, M1911A1 in the Vietnam War era. The designation changed to Pistol, Caliber. 45, M1911A1 for the improved M1911A1 model which entered service in 1926. 45, M1911 for the original model adopted in March 1911, and Automatic Pistol, Caliber. military designation as of 1940 was Automatic Pistol, Caliber. The M1911 ( Colt 1911 or Colt Government) is a single-action, recoil-operated, semi-automatic pistol chambered for the. 7-round or 8-round (.45 ACP) box magazine
