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The United States Army then began testing several rifles to replace the obsolete M1 Garand. Springfield Armory's T44E4 and heavier T44E5 were essentially updated versions of the Garand chambered for the new 7.62×51mm NATO round, while Fabrique Nationale submitted their FN FAL as the T48, and the British submitted their EM-2 rifle.
Initially all Colt civilian weapons were listed with an “R” prefix, with this changing to “AR” following the passage of the Federal Assault Weapons Ban in 1994. Colt also produced a line of weapons aimed at target shooters under the “MT” prefix, which stood for Match Target, as well as, the Colt Accurized Rifle, which was the only ...
AR-15–style rifles are now available in a wide range of configurations and calibers from a large number of manufacturers. These configurations range from standard full-sizes rifles with 20-inch (51 cm) barrels, to short carbine-length models with 16-inch (41 cm) barrels, adjustable length stocks and optical sights, to long range target models ...
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.
When fired from a 20 in (510 mm) barrel at ranges of up to 300 feet (100 m), the thin-jacketed lead-cored round traveled fast enough (above 2,900 ft/s (880 m/s)) that the force of striking a human body would cause the round to yaw (or tumble) and fragment into about a dozen pieces of various sizes thus created wounds that were out of proportion ...
Other cartridges were derived from re-forming an existing case and possibly trimming the length in order to arrive at a case-shape that meets the standardized SAAMI-spec dimensions. AR-15 : 22 Nosler : Proprietary, uses the head and rim dimensions of the 5.56x45, and a case-body that is similar to the 6.8 SPC case.
Most were issued to Navy SEALs and Army Special Forces, though some were also given to Army K-9 units. In 1965, Colt introduced the Model 607 Submachine Gun. This was the first AR-15 made with a retractable buttstock and was as a product of the development of Colt's SMG prototypes.
A range table was a list of angles of elevation a particular artillery gun barrel needed to be set to, to strike a target at a particular distance with a projectile of a particular weight using a propellant cartridge of a particular weight.