Colt 1911 Special Combat Government .45 ACP

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Colt 1911 Special Combat Government .45 ACP MK IV Series 80

The M1911, also known as the “Government” or “Colt Government”, is a single-action, semi-automatic, magazine-fed, recoil-operated pistol chambered for the .45 ACP cartridge. It served as the standard-issue sidearm for the United States Armed Forces from 1911 to 1986. It was widely used in World War I, World War II, the Korean War, and the Vietnam War. The pistol’s formal designation as of 1940 was Automatic Pistol, Caliber .45, M1911 for the original model of 1911 or Automatic Pistol, Caliber .45, M1911A1 for the M1911A1, adopted in 1924. The designation changed to Pistol, Caliber .45, Automatic, M1911A1 in the Vietnam War era.

The U.S. procured around 2.7 million M1911 and M1911A1 pistols in military contracts during its service life. The M1911 was replaced by the 9 mm Beretta M9 pistol as the standard U.S. sidearm in October 1986, but due to its popularity among users, it has not been completely phased out. Modernized derivative variants of the M1911 are still in use by some units of the U.S. Army Special Forces and the U.S. Navy.

Designed by John Browning, the M1911 is the best-known of his designs to use the short recoil principle in its basic design. 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. It is popular with civilian shooters in competitive events such as USPSA, IDPA, International Practical Shooting Confederation, and Bullseye shooting. Compact variants are popular civilian concealed carry weapons in the U.S. because of the design’s relatively slim width and the stopping power of the .45 ACP cartridge.

Civilian models:

Colt Commander: In 1949 Colt began production of the Colt Commander, an aluminum framed 1911 with a 4 ¼ inch barrel and a rounded hammer. It was developed in response to an Army requirement issued in 1949, for a lighter replacement for the M1911 pistol, for issue to officers. In 1970, Colt introduced the all-steel “Colt Combat Commander”, with an optional model in satin nickel. To differentiate between the two models, the aluminum-framed model was renamed the “Lightweight Commander”.

Colt Government Mk. IV Series 70 (1970–1983): Introduced the accurized Split Barrel Bushing (collet bushing). The first 1000 prototypes in the serial number range 35800NM – 37025NM were marked BB on the barrel and the slide. Commander sized pistols retained the solid bushing.

Colt Government Mk. IV Series 80 (1983–present): Introduced an internal firing pin safety and a new half-cock notch on the sear; pulling the trigger on these models while at half-cock will cause the hammer to drop. Models after 1988 returned to the solid barrel bushing due to concerns about breakages of collet bushings.

Colt Gold Cup National Match 1911/Mk. IV Series 70/Mk. IV Series 80 MKIV/Series 70 Gold Cup 75th Anniversary National Match/Camp Perry 1978. Limited to 200 pistols. (1983–1996) Gold Cup MKIV Series 80 National Match – .45 ACP, Colt-Elliason adjustable rear sight, fully adjustable Bomar-Style rear sight, target post front sight, spur hammer, wide target trigger, lowered and flared ejection port, National Match barrel, beveled top slide, wrap-around rubber stocks with nickel medallion.

Colt 1991 Series (1991–2001 ORM; 2001–present NRM): A hybrid of the M1911A1 military model redesigned to use the slide of the Mk. IV Model 80; these models aimed at providing a more “mil-spec” pistol to be sold at a lower price than Colt’s other 1911 models in order to compete with imported pistols from manufacturers such as Springfield Armory and Norinco. The 1991–2001 model used a large “M1991A1” rollmark engraved on the slide. The 2001 model introduced a new “Colt’s Government Model” rollmark engraving. The 1991 series incorporates full-sized blued and stainless models in either .45 ACP or .38 Super, as well as blued and stainless Commander models in .45 ACP.