Complete Ar15 Bolt Carrier Group compatible with .458 Socom and .450 Bushmaster . Melonite / Black Nitride Finish. Drop into your 458/450 upper.
- Nitride m16 Carrier
- .458/450 Compatible Bolt face
- MPI/HPT Tested, Shot Peened
- Properly Staked Gas key with grade 8
- Firing pin
- Retaining pin
- Lifetime Warranty & Made in USA