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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 PT1911 offers features found on models from semi-custom pistol manufacturers such as Springfield Armory, Para-Ordnance, and Kimber Manufacturing. [1] Featuring a forged steel frame and slide, the PT1911 was originally marketed with a blued carbon steel finish, but as of late 2007 a stainless steel version was released.
RIA (Rock Island Armory) 1911s are derivatives of the US Military G.I. M1911-A1, the standard issue US Service pistol from 1911 to 1985. [3] Most RIA models are targeted at the low-end price point of the 1911 pistol market and are basic entry-level MIL-SPEC versions of the 1911. [4] However, some models offer additional higher-end features.
SIG Sauer of Newington, New Hampshire, manufactures a full line of 1911 styled handguns.The earliest models were very faithful to the John M. Browning designed Colt M1911 Pistol which became the United States standard sidearm and served in that capacity for some seven decades before being replaced by the Beretta M9 handgun.
The Remington 1911 R1 is a semi-automatic pistol modeled after the classic Colt 1911 which has served the US armed forces for over 100 years. Like the Colt 1911, the Remington 1911 is single action only, and has a grip safety and a manually operated thumb safety ; it also has a Colt Series 80 style firing pin safety .
As an M1911 style pistol, it is usually chambered in .45 ACP. It also has been produced in other calibers, including .40 S&W, 10mm Auto, 9mm Luger, and .38 Super. The individual gun's caliber is stamped on top of the barrel and is visible with the slide in battery (fully forward). The Custom is a full-sized model 1911, with a five-inch barrel.
The cartridge-pistol combination was quite successful but not satisfactory for U.S. military purposes. Over time, a series of improved designs were offered, culminating in the adoption in 1911 of the "Cal. 45 Automatic Pistol Ball Cartridge, Model of 1911", a 1.273-inch-long (32 mm) round with a bullet weight of 230 grains (15 g).
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.