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.

UPC

094922034977

Manufacturer

Fail Zero

Manufacturer Part Number

FZ-M164-01-NH-MATTE

Product Type

Bolt Carrier Group

Model

M16/M4

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