Your Bolt Carrier Group is one of the most critical parts of your build. Don't buy an imitation. This is the Spike's Tactical Lightweight BCG with Nickel Boron Coating.
Mil Spec Carrier
- 8620 Tool Steel
- Full Auto M-16
- Holes for Reduced Weight (-1oz)
Bolt
- 158 Carpenter Steel
- Shot Peened
- High Pressure Tested (HPT)
- Magnetic Particle Inspected (MPI)
Mil Spec Extractor
- 8620 Tool Steel
- Nickel Boron Finish
- Extractor Spring
- Black Extractor Insert
- Viton O-Ring
Mil Spec Gas Key
- 8620 Tool Steel
- Grade 8 Hardware
- Properly Staked
Firing Pin with Hard Chrome Finish
Cam Pin Nickel Boron Finish
