American-made, solid steel construction with grip-enhancing phosphate finish engages both stock and pin-style barrel nuts. Fits standard sized flash hiders. Installs and removes rifle receiver extensions and carbine castle nuts, with extended teeth for use with ASAP plates. Two hammer faces. Works with 1/2" torque wrench, relevant torque specifications included on Wrench for quick reference. Convenient Bottle Opener for refreshments after the build is complete (fits both Metric and SAE bottle caps.) Made in U.S.A. Features: American-made with US steel Heat-treated steel construction with manganese phosphate finish USGI barrel nut wrench Free-float tube barrel nut wrench 1/2" torque wrench/breaker bar interface Armorer's hammer Rifle-length/Entry-length receiver extension wrench USGI castle nut wrench*, usable with aftermarket end plates such as the ASAPA(R) and ASAPA(R)-QD 3/4" wrench for most flash hiders/muzzle brakes USGI torque spec references Bottle opener Specification: Armorer's Wrench - AR15/M4 Weight: 1.1 lb. Length, maximum: 11.7 in. Handle Thickness: 0.35 in.