KAK Industry AR-15 M16 Profile Bolt Carrier Group 5.56

A complete AR-15 bolt carrier group in 5.56 with the M16 profile carrier, which means full length rail contact and the heavier carrier weight most builders want for reliable cycling. The bolt is machined from steel.

The NP3 coating is what sets this one apart from a phosphate carrier. It is electroless nickel plated with a fluoropolymer suspended in it, so the surface is both slick and hard. Friction drops, carbon and fouling have a harder time bonding to it, and cleanup usually amounts to wiping the carrier down rather than scrubbing it. Corrosion resistance comes along with the plating.