Taking their 5.56 Bolt Carrier a step further, Noveske offers their Black Nitride BCG. What makes this AR-15 upper receiver part special? Black Nitride finish is much more beneficial than typical Parkerize, Black Oxide or Black Phosphate; it is a thermal chemical diffusion of nitrogen and carbon into the surface of the steel. Simply put, it increases wear-resistance, fatigue strength, corrosion resistance, lubricity as well as cosmetic appeal.

Specifications and Features:
Noveske Enhanced Bolt Carrier Group
.223 Remington/5.56 NATO/.300 AAC Blackout
Complete with carrier, bolt, gas key and firing pin
Increased wear-resistance, fatigue strength, corrosion resistance and lubricity
Staked Gas Key
M16 Profile
8620 Steel Carrier
158 Carpenter Steel Bolt
9310 Tool Steel Extractor/Cam Pin
Black Nitride Finish

Fits:
AR-15 upper receivers