ArmaLite AR-10A in 7.62 NATO with 20-inch barrel. Modern production of the original AR-10 design by its originating company. Type: Rifle Action: Semi-Automatic Caliber: 7.62x51mm NATO Capacity: 20 Year introduced: 1999, USA Weight: 9.8 oz Overall length: 40.5" Status: Active Intended use: Hunting, Precision, Tactical