Brownells Carrier Key Bit Kit
Brownells Carrier Key Bit Kit, Two hex bits for installing the bolt carrier key socket head screws, plus an adapter that will connect the Carrier Key Bits to the 3/8" Drive Torque Wrench. Small and large bits handle both early and late guns. Mfg: Brownells SPECS: Heat-treated steel. 185-2 Bit - 1/8" (3.2mm) hex bit. 185-10 Bit - 9/64" (3.6mm) hex bit. 1" (2.5cm) long. Adapter - Heat-treated steel with retention clip adapts 3/8" square drive to accept 1/4" shank hex bits.