FAILZERO Bolt Carrier Group AR9 9mm Nickel Boron
- Fully assembled and ready to drop into most 9mm AR platform rifles and pistols
- Compatible with Glock and Colt magazine lowers
- EXO Nickel Boron coating provides permanent dry lubricity, extreme durability, and increases wear and corrosion resistance
- Nickel Boron coating reduces friction and improves overall performance