Brownells AR-15 and M16 Armorer's Wrench
This guide details the use of the Brownells AR-15/M16 Armorer's Wrench for building and maintaining the rifle. It covers compatibility with different barrel nut styles, installation of handguards and receiver extensions, and proper engagement for M4 lock nuts. The wrench also features slots for A1/A2 flash hiders and a torque drive opening.












