The Sons of Liberty Gun Works Scalper Bolt Carrier Group (BCG) is a high-quality component designed for enhanced durability, performance, and corrosion resistance in AR-15 rifles.
Features:
- Carrier machined from AISI 8620 steel
- Corrosion-resistant Manganese phosphate coating
- Bolt is constructed from Carpenter Technology No. 158 Alloy
- HPT and MPI
- Gas key is constructed from 4130 chromoly steel and properly staked
- 4340 tool steel extractor is shot peened
- S7 tool steel ejector is shot peened