Fail Zero 6mm ARC Bolt Carrier Group, Nickel Boron - FZ-6mm-ARC-NH

This is a fully assembled bolt carrier group (BCG) designed for 6mm ARC Grendel rifles and compatible with most Mil-Spec upper receivers. All critical components including the bolt and extractor are coated with EXO Nickel Boron technology, which provides dry lubricity, extreme durability, enhanced wear and corrosion resistance, and easier cleanup.