RCA 5.56 Black Nitride Bolt Carrier Group - M16
Noveske marked with a black nitride finish. Carrier features 8620 steel with 9310 bolt and tool steel extractor and cam pin.
Much more than typical Parkerizing, phosphating or black oxide, Blacknitriding℠ is a thermal chemical diffusion of nitrogen and carbon into the surface of the steel. This process increases wear-resistance, fatigue strength, corrosion resistance, lubricity and cosmetic appeal.
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