LWRC M6A2 with 14.7-inch cold-hammer-forged barrel and pinned-and-welded muzzle device reaching 16-inch legal length. The 14.7-inch barrel with LWRC's piston system provides improved ballistics over the 11.5-inch UCIW while remaining legal as a rifle without NFA registration. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2007, USA Weight: 112 oz Overall length: 33.25" Status: Active Intended use: Tactical, Law Enforcement, Military