The Rock River Arms LAR-458 CAR A4 is chambered in .458 SOCOM, a large-bore cartridge developed for the AR-15 platform to deliver significantly greater terminal energy than 5.56 NATO from a standard AR-15 lower. Features a 16-inch barrel, carbine gas system, and standard M4 furniture. The .458 SOCOM provides deer-hunting-legal terminal performance in a standard AR-15 size package. Type: Rifle Action: Semi-Automatic Caliber: .458 SOCOM Capacity: 7 Year introduced: 2007, USA Weight: 7.1 oz Overall length: 32.5" Status: Active Intended use: Hunting, Tactical