The Rock River Arms LAR-47 is an AR-15-pattern rifle engineered specifically for 7.62x39mm, using a modified bolt and barrel designed to provide reliable feeding of the AK-47 cartridge — the chronic feed reliability problem of other AR-15 7.62x39 conversions. Features a 16-inch barrel and accepts AK-pattern magazines through a modified magazine well insert. RRA's solution addresses the geometric taper issue more directly than competitor approaches. Type: Rifle Action: Semi-Automatic Caliber: 7.62x39mm Capacity: 30 Year introduced: 2013, USA Weight: 7 oz Overall length: 32" Status: Discontinued Intended use: Sport Shooting, Hunting