This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16″ M4 or 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.
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Looking for the best prices on FZ M16/M4 BOLT CARRIER GROUP by Fail Zero? Big Mike’s Guns and Ammo proudly serves Fallon, Carson City, Sparks, Reno, and beyond with unbeatable pricing, expert service, and exclusive rewards.
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