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Any AR-15/AR-10 cartridge cases that are derived from the 7.62x51 can also be formed from these listed calibers. (7.62x51 & .308 are similar in external dimensions though the Brass has different internal capacity and Max PSI recommendations are different & Chambers are different.) AR-10: The AR-10 is slightly larger and heavier than the AR-15.
The Colt AR-15 is a product line of magazine-fed, gas-operated, autoloading rifle manufactured by Colt's Manufacturing Company ("Colt") in many configurations. [1] The rifle is a derivative of its predecessor, the lightweight ArmaLite AR-15 , an automatic rifle designed by Eugene Stoner and other engineers at ArmaLite in 1956.
The first version produced for commercial sale by Colt was the SP1 model AR-15 Sporter in .223 Remington, with a 20-inch (51 cm) barrel and issued with five-round magazines. [21] Initial sales of the Colt AR-15 were slow, primarily due to its fixed sights and carry handle that made scopes difficult to mount and awkward to use. [84]
The Canadian company Colt Canada (formerly Diemaco) licensed production of a rifle (Colt Model 715) and carbine (Colt Model 725), but later went on to produce an entire line of AR-15/M16 pattern weapons developed independently. In May 2005, Colt's Manufacturing Company acquired Diemaco, and the name was changed to Colt Canada.
AR-15.223 Remington, 5.56 NATO: ArmaLite, Colt's Manufacturing Company: A lightweight assault rifle. A smaller version of the AR-10 and adopted by the United States military as the M16 rifle. Later developed by Colt into a popular semi-automatic Colt AR-15. AR-16: 7.62×51mm NATO: ArmaLite: Prototype battle rifle. ArmaLite AR-17: 12 gauge
Colt ACR: Colt's Manufacturing Company: 5.56×45mm M855 or Duplex United States no 1982 Colt Advanced Piston Carbine: Colt's Manufacturing Company: 5.56×45mm NATO United States yes 2010s-present Colt CM901: Colt Defense: 5.56×45mm NATO 6.8mm Remington SPC 7.62×39mm United States c.2012–present Colt MARS: Colt: 5.56×30mm Mars United States ...
The Armalite AR-15 is the parent of a variety of Colt AR-15 and M16 rifle variants. History After World War II, the United States military started looking for a single automatic rifle to replace the M1 Garand , M1/M2 Carbines , M1918 Browning Automatic Rifle , M3 "Grease Gun" and Thompson submachine gun .
M16/M4/AR-15 and derivatives Assault rifle/semi-automatic rifle United States: 15,000,000 20,000,000 10 million military M16/M4, (Colt production only as of 2011) [14] 5-10 million civilian AR-15 (as of 2016) [15] [16] Lee–Enfield: Bolt-action rifle United Kingdom: 16,000,000 [17] 17,000,000 [18] SKS: Semi-automatic rifle Soviet Union ...