Magpul Armorers Wrench - AR15/M4, RET, Black,
Magpul Armorers Wrench - AR15/M4, RET, Black,, The Magpul Armorer's Wrench - AR15/M4 is an American-made, extremely durable, solid steel tool that's comfortable to grip. Engages both stock and pin-style barrel nuts. Fits standard sized flash hiders. Installs and removes rifle receiver extensions and carbine castle nuts, and has extended teeth for use with ASAP(R) plates. Includes two hammer faces.