Description
PremiereFirearms Complete AR15 BCG 5.56 / .223 – Black Nitride
The best BCGs for replacement parts andbuilds have strong and dependable carriers with trusty bolt assembliesthat cycle reliably. That’s exactly what you’ll get with this high qualitycomplete BCG. Premiere Manf M16bolt carrier groupsarepolished before and after the H&M BLACKNITRIDE â„¢ process, producing a beautiful finish and reducing the friction coefficent. The carrier is made from 8620 steel. The bolt is made from 9310 steel. The 223 Bolt and Bolt Carrier Assembly is compatible with 5.56 NATO and 300 Blackout.
- Enhanced 9310 Steel (Bolt)
- 8620 Tool Steel (Carrier)
- Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring
- Tool Steel Extractor
- Shrouded Firing Pin
- Mil-Spec Gas Key (4130 Steel) attached with Grade 8 hardware and heavily staked
- Caliber: .223 / 5.56 / 300 Blackout
- Bolt is shot Peened and MPI
- All BCG components are polished
