The ArmaLite AR-15[note 3] is a select-fire,[note 1] gas-operated, air-cooled, magazine-fed rifle manufactured in the United States between 1959 and 1964.[10] 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 rifle and to fire a new high-velocity, lightweight, small-caliber cartridge to allow infantrymen to carry more ammunition.[11]
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