Carrier Key Bit Kit - Brn Ar-15/M16 Carrier Key Bit Kit, 3 Piece

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.