The Sons of Liberty Gun Works M4-76 was designed to be Ultimate Fighting Rifle. It features their new M76 Wedge Lock Rail, Liberty Fighting Trigger and the Vltor A5 buffer system. SOLGW has nothing to hide with their quality builds. This rifle comes with a NOX muzzle device and is pinned and welded to make it a non NFA rifle, bringing it to a 16" OAL.