The Midwest Industries AR Professional Armorer's Wrench is a versatile and durable tool designed for comprehensive maintenance and assembly of both 5.56 and 7.62 AR platform rifles. Constructed from 4140 heat-treated steel, this American-made wrench ensures longevity and reliable performance. Key Features: Barrel Nut Compatibility: Works with encapsulated and pin-style barrel nuts, including the standard GI style, facilitating versatile application. Free Float Barrel Nut Drive End: Equipped with a drive end specifically designed for all Midwest Industries free float barrel nuts, enhancing compatibility with their products. Muzzle Device Wrench: Features a &fra Mfg: Midwest Industries