Helical 1 Piece – Gas Ring .223/5.56

AR-15 Bolt Head 5.56

5.56 PHOSPHATE BOLT COMPLETION KIT

Fail Zero M16/M4 Bolt Carrier Group Black Nitride

TNTE M16 9310 Bolt Carrier Group Assembly .223/5.56

TNTE M16 C158 Bolt Carrier Group Assembly .223/5.56

5.56 M16 BCG and Charging Handle Kit

5.56 M-16 Phosphate BCG with BCM Gunfighter

5.56 M16 Nickel Boron Bolt Carrier Group

CMMG M-16 5.56 Bolt Carrier Group

M16 Nickel Boron EXO Bolt Carrier Group

Fail Zero EXO Coated AR15 BCG