The Noveske 5.56/300 BLK DLC Enhanced Bolt Carrier Group (brand part no. 05002854) is a complete bolt carrier group for AR-15 builders who want a hard, easy-to-clean finish on the part that does the most work in the rifle. The carrier is cut from proprietary 8620 steel, coated in DLC and machined to USGI specifications, with a chrome-lined bore and a chrome-lined, heat-treated gas key staked per mil-spec. The bolt is made from Carpenter No. 158 steel, shot peened and magnetic-particle inspected for strength. Each enhanced DLC group is hand assembled and checked against Noveske’s own specifications for function and quality. Browse more AR bolt carrier groups from Noveske Rifleworks.

Key Specifications

• The group is made for 5.56mm and 300 BLK, so one carrier covers both calibers.
• The carrier is machined to USGI specifications, which keeps it interchangeable with standard mil-spec parts.
• The carrier steel is aircraft-grade, domestically sourced proprietary 8620, a tough carburizing alloy.
• The exterior wears a DLC (diamond-like carbon) coating applied to Noveske’s specification for hardness and easy cleanup.
• The carrier bore is chrome lined, which resists wear and fouling where the bolt rides.
• The gas key is chrome lined and heat treated, secured with Grade 8 fasteners and staked per mil-spec.
• The bolt is machined from Carpenter No. 158 steel, shot peened and magnetic-particle inspected, with a tool steel extractor and ejector.

Frequently Asked Questions

Does the DLC finish need oil? Yes. Noveske notes that DLC is very hard, wear resistant and easy to clean, but it should still be oiled on a regular basis to get the full benefit.

Which calibers is this group made for? Noveske lists it for 5.56mm and 300 BLK, and it uses an M16/M4-pattern carrier with a mil-spec gas key.

What is the bolt made from? Carpenter No. 158 steel, shot peened for strength and magnetic-particle inspected, with a tool steel extractor and ejector plus the extractor spring and washer.

Buy the Noveske 5.56/300 BLK DLC Enhanced Bolt Carrier Group

A bolt carrier group is the part a rifle works hardest, so a hard coating and a verified bolt are worth paying attention to. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your door.