Nickel Boron coated and Chrome Lined. The Carrier is made from 8620 steel, and the Bolt is made from 9310 steel and Nickel Boron coated, MPI Tested.
The 223 Bolt and Bolt Carrier Assembly comes complete with Cam Pin, Firing Pin and Firing Pin Retainer.
Compatible with any mil spec AR-15 upper receiver, not just Anderson.
UPS 712038922314
B2-K630-AB00-0P