This full-auto rated Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec 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. This kit does come with an EXO coated hammer to be installed in AR15 and AR style weapon systems.
Nickel Boron treated parts include:
- Bolt & Extractor (5.56/.223/300 Blackout compatible)
- Bolt Carrier
- Extractor
- Cam Pin
- Carrier Key
- Firing Pin
- AR15 Hammer
