![AR15 BCG- 5.56/ 300 Blackout, Full Chrome AR15 BCG- 5.56/ 300 Blackout, Full Chrome](https://cdn11.bigcommerce.com/s-o7djqgmkwq/images/stencil/300x300/products/705/2287/BCG_10__03042__02339.1717462467.jpg?c=1)
- M16 Auto Profile Carrier Machined from Aircraft/ Bearing Quality 8620 Steel, Properly Heat Treated, Ground to Perfection, Nickel Boron Finish
- Bolt is machined from a single piece aircraft/bearing quality 9310 steel, heat treated properly, precision ground, Shot Peened and MPI’d
- Firing pin is machined to the mil-spec print from 8740, precision ground, and chrome plated
- One Piece Billet Fully Machined Enhanced Extractor, Phosphate coated for Increased reliability and corrosion resistance
- NIB Cam Pin
- S7 tool steel ejector and extractor retaining pin
- 4130 Gas Key, NIB, precision staked using our hydraulic staking machine
- KAK Carrier Key Screws- T25 drive, Grade 8, Properly Heat Treated