Noveske Bolt Carrier Group , M4 , Phosphate Chrom Lined Gas Key, DLC Black Finsih , Engraved Cross

Bolt carrier group (full auto version) DLC exterior coated to Noveske specification with chrome lined bore. Machined to USGI specifications. Carrier is made out of Aircraft grade, domestically sourced proprietary 8620 steel. This M16/M4 carrier includes the proper Mil-Spec gas key. Gas key is chrome lined and heat treated per GI specifications. Gas key is secured to carrier via USGI domestically manufactured Grade 8 fasteners and properly staked per Mil-Spec.

• The bolt assembly is machined from the correct Mil-Spec Carpenter No. 158 steel, shot peened for increased strength, includes tool steel machined extractor and ejector, extractor spring and washer, and is MPI (Magnetic Particle Inspected).
• All Noveske enhanced DLC Bolt Carrier Groups hand assembled and verified to meet Noveske specs for function, and quality.
• Carriers finished in DLC (Diamond Like Carbon). DLC is extremely hard, wear resistant, and easy to clean, but needs to be oiled on a regular basis to realize its full potential