FailZero AR-15 Bolt Carrier Group No Hammer EXO Nickel Boron Coated

This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec AR-15 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.

Features:

• Nickel boron treated
• Extreme durability
• Dry lubricity
• Corrosion resistant