From Midwest Industries, the AR Professional Armorer's Wrench! Designed to work with both 5.56 and 7.62 AR Platform rifle components. Works with encapsulated and pin style barrel nuts including the GI style nut Drive end for all MI free float barrel nuts A 3/4 inch wrench for A2 muzzle devices and designed to work with the thin flats on many of the popular suppressor mounts Castle nut driver with 3 notch engagement Combat bottle opener Small hammer head Torque specs features on wrench handle. Constructed from 4140 heat treated steel Made 100% in the USA Ever dealt with those stubborn barrel nuts that just won't wor Mfg: Midwest Industries