Sons of Liberty Gun Works
FailZero M16 Bolt Carrier GroupFailZero
This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both wear and corrosion resistance. Our patented Nickel Boron coating will reduce friction and improve the overall performance of your rifle.
- Bolt & Extractor (5.56/.223/300 Blackout compatible)
- Bolt Carrier
- Cam Pin
- Carrier Key
- Firing Pin