Spikes ST5BG03 Bolt Carrier Group 223 Rem,5.56x45mm NATO Nickel Boron Steel AR-15, M16 Full Auto
Spikes Tactical Complete Phosphate M-16 BCG features phosphate coating inside and out (bolt, carrier and gas key), laser engraved with ST spider logo, mil spec carrier and full auto M-16. Includes Mil-Spec Extractor, Mil-Spec Gas Key, Firing Pin, Cam Pin and Retaining Pin.