Magpul Armorer's Wrench for AR-15/M4

The Magpul® Armorer's Wrench fits both stock and pin-style barrel nuts, standard sized flash hiders, receiver extensions, and carbine castle nuts. The Armorer's Wrench is made of solid steel and has an enhanced, non-slip phosphate finish. It's everything you need to work on your AR-15 or M4 in the shop or field in one convenient tool. 

• Made of solid steel with phosphate finish
• Fits most nuts on AR rifles and carbines
• Fits standard sized flash hiders and receiver extensions (not included)

NOTE: Not compatible with larger pistol-style receiver extension tubes