.223/5.56 M16 Bolt Carrier Group - Black Nitride
Nitrided M16 Bolt Carrier Group, made from 8620 steel, Bolt is made from 9310 steel MPI Tested. The 223 Bolt and Bolt Carrier Assembly comes complete with cam pin , firing pin and firing pin retainer.
.223 / 5.56 bolt assembly is compatible with .300BLK as well!
Fully mil-spec construction
Durable Nitride finish
9310 steel bolt is MPI tested
8620 steel full-shroud M16 style bolt carrier
Properly staked gas key