The ArmaLite AR-15 is a select-fire, air-cooled, gas-operated, magazine-fed assault rifle manufactured in the United States between 1959 and 1964, and adopted by the United States Armed Forces as the M16 rifle.[5] Designed by American gun manufacturer ArmaLite in 1956, it was based on its AR-10 rifle. The ArmaLite AR-15 was designed to be a lightweight assault rifle and to fire a new high-velocity, lightweight, small-caliber cartridge to allow infantrymen to carry more ammunition.
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