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Details of FailZero Full Auto Rated Lightweight Bolt Carrier Group
This FailZero Full Auto Rated Lightweight (Low Mass) 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.Full Auto Rated9.6 oz. Total5.56/.223/300 Blackout CompatibleNickel Boron treatedExtreme durabilityDry lubricityCorrosion resistant