COMPLETE 5.56 POLISHED BLACK NITRIDE BCG - PACK OF 3

Our Nitrided M16 BCG is micro polished before and after the Melonite process, producing a beautiful finish and an extremely slick surface. The carrier is made from 8620 steel. The bolt is made from 9310 steel and is MPI Tested and engraved. The 223 Bolt and Bolt Carrier Assembly is compatible with 5.56 and 300 Blackout.