Alexander Arms complete .50 Beowulf AR-15 with 16-inch barrel in the standard configuration, the factory-built version of the proprietary large-bore AR-15 cartridge platform. Type: Rifle Action: Semi-Automatic Caliber: .50 Beowulf Capacity: 7 Year introduced: 2001, USA Weight: 112 oz Overall length: 32" Status: Active Intended use: Hunting, Tactical