ArmaLite's AR-1, AR-5, and some subsequent models were bolt action rifles, the AR-7 a semiautomatic survival rifle and there are shotguns and pistols whose model numbers include the "AR" prefix. The "AR" in AR-15 comes from the ArmaLite name. The AR-15 was developed as a lighter, 5.56 mm version of the AR-10. James Sullivan of the Fairchild ArmaLite corporation. The AR-15 is based on the 7.62 mm AR-10, designed by Eugene Stoner, Robert Fremont and L. The name "AR-15" is a Colt registered trademark, which refers only to the semi-automatic rifle.
Colt then marketed the Colt AR-15 as a semi-automatic version of the M16 rifle for civilian sales in 1963. The select-fire AR-15 entered the US military system as the M16 rifle. Because of financial problems, ArmaLite sold the AR-15 design to Colt. The AR-15 was first built by ArmaLite as a selective fire assault rifle for the United States armed forces. It is manufactured with the extensive use of aluminum alloys and synthetic materials. The AR-15 is a lightweight, 5.56 mm, air-cooled, gas-operated, magazine-fed semi-automatic rifle, with a rotating-lock bolt, actuated by direct impingement gas operation or long/short stroke piston operation. The part shown bottom center is the lower receiver, which under US law is the component legally considered the "firearm".ĪrmaLite, Colt, Bushmaster, Rock River Arms, Stag Arms, DPMS Panther Arms, Olympic Arms, and others.Ĩ00 rounds/min (fully automatic versions only) The AR-15 comes in many sizes and has many options, depending on the manufacturer.
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