MagpulA(R) Armorer's Wrench - AR15/M4

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.)Features:American-made with US steelHeat-treated steel construction with manganese phosphate finishUSGI barrel nut wrenchFree-float tube barrel nut wrench1/2" torque wrench/breaker bar interfaceArmorer's hammerRifle-length/Entry-length receiver extension wrenchUSGI castle nut wrench*, usable with aftermarket end plates such as the ASAPA(R) and ASAPA(R)-QD3/4" wrench for most flash hiders/muzzle brakesUSGI torque spec referencesBottle opener