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The pistol's formal U.S. military designation as of 1940 was Automatic Pistol, Caliber .45, M1911 for the original model adopted in March 1911, and Automatic Pistol, Caliber .45, M1911A1 for the improved M1911A1 model which entered service in 1926. The designation changed to Pistol, Caliber .45, Automatic, M1911A1 in the Vietnam War era. [10]
The .45 ACP (not to be confused with .45 Colt) cartridge is a very popular caliber due to its low velocity and relatively high stopping power. This caliber is associated most with the Colt M1911, logically, as ACP literally means 'Automatic Colt Pistol'. However, there are many more guns and variations on the M1911 that are chambered in .45 ACP.
Commissions to test possible new service pistols were active from 1904 till 1911. In 1911, a commission recommended adoption of the semi-automatic .38 ACP caliber Colt Military Model 1902 pistol, after field trials with 25 such pistols, all purchased from Colt's London Agency. However, as the US had just adopted the Colt .45ACP M1911 pistol it ...
On July 20, 2012, the Colt 1911 Rail Gun was selected and won a contract to initially deliver 4,000 pistols for MARSOC and Force Recon. [16] The pistol was redesignated the M45A1 Close Quarter Battle Pistol (CQBP) and up to 12,000 will be delivered. [17] The Colt design is considered an upgrade of the previous pistol, not an entirely new design ...
The Colt Officer's Model or Colt Officer's ACP is a single-action, semi-automatic, magazine-fed, and recoil-operated handgun based on the John M. Browning designed M1911. It was introduced in 1985 as a response from Colt to numerous aftermarket companies making smaller versions of the M1911 pistol.
Colt's Manufacturing Company.45 ACP United States: 1911–present (Model 1911A1 introduced 1924) Colt Model 1903 Pocket Hammer: Colt's Manufacturing Company.38 ACP United States: 1903-1927 Colt Model 1903 Pocket Hammerless: Colt's Manufacturing Company.32 ACP.380 ACP United States: 1903–1945 Colt Mustang: Colt's Manufacturing Company.380 ACP
Models in use included the M1911A1 (Colt .45 Automatic), Smith & Wesson (Combat Masterpiece in .38 Special caliber), Smith and Wesson Model 1917 (.45 ACP and .45 Auto Rim) and various other small arms. By the 1970s it became obvious that the M1911A1 (Colt Government .45ACP) model was going to have to be replaced. [4]
The first prototype of the new gun was still chambered in .44 rimfire, but the first model was in the newest caliber known as the .45 Colt. Colt Single Action Army, U.S. Artillery Model The revolver was chosen by the Army in 1872, with the first order, for 8000 revolvers, shipping in the summer of 1873: [ 45 ] The Colt Single Action Army or ...