This 7.62×39 Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil-spec upper receivers chambered in 7.62×39. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity” extreme durability and increases both wear and corrosion resistance.
Nickel Boron treated
Extreme durability
Dry lubricity
Corrosion resistant
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