The United States Army then began testing several rifles to replace the obsolete M1 Garand. This culminated in the development of the 7.62×51mm NATO cartridge. 30 caliber cartridge be developed, that could not only be used by the new automatic rifle, but by the new general-purpose machine gun (GPMG) in concurrent development. However, senior American commanders having faced fanatical enemies and experienced major logistical problems during WWII and the Korean War, insisted that a single powerful. American weapons designers concluded that an intermediate round was necessary, and recommended a small-caliber, high-velocity cartridge. However, combat experience suggested that the. During the Korean War, the select-fire M2 Carbine largely replaced the submachine gun in US service and became the most widely used Carbine variant.
However, early experiments with select-fire versions of the M1 Garand proved disappointing. The Armalite AR-15 is the parent of a variety of Colt AR-15 and M16 rifle variants.Īfter 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. Ĭolt continued to use the AR-15 trademark for its line of semi-automatic-only rifles marketed to civilian and law-enforcement customers, known as Colt AR-15. military in January 1962 and subsequently designated as M16 rifle in December 1963, which went into production and service in 1964. Colt marketed the redesigned rifle to various military services around the world and was eventually adopted by the U.S. After modifications (most notably, the charging handle was re-located from under the carrying handle like AR-10 to the rear of the receiver), Colt rebranded it the Colt 601, however, it still carried the Armalite markings due to contractual obligations to Armalite/Fairchild Aircraft Co. In 1959, ArmaLite sold its rights to the AR-15 to Colt due to financial difficulties and limitations in terms of manpower and production capacity. The ArmaLite AR-15 was designed to be a lightweight rifle and to fire a new high-velocity, lightweight, small-caliber cartridge to allow infantrymen to carry more ammunition. Designed by American gun manufacturer ArmaLite in 1956, it was based on its AR-10 rifle. The ArmaLite AR-15 is a select-fire, gas-operated, air-cooled, magazine-fed rifle manufactured in the United States between 19. Gas-operated, rotating bolt (direct expansion of gas on surfaces of bolt carrier)
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