CMMG BCG AR-15 6.5 Grendel / 6mm ARC

This complete bolt carrier group from CMMG is built to operate in AR-15 platform firearms chambered in 6.5 Grendel or 6mm ARC. The assembly combines durable materials and protective finishes to support consistent function in standard AR variants. Note that it will not work with the CMMG MkW platform. The BCG is intended as a reliable replacement or upgrade for rifles dedicated to these cartridges.

Key Specifications

• Compatible with AR-15 platform chambered in 6.5 Grendel or 6mm ARC.
• The bolt is made from 9310 steel with a phosphate finish.
• The carrier is made from 8620 steel, chrome-lined with a phosphate finish.
• The extractor is made from 4140 steel with a phosphate finish.
• This is a complete bolt carrier group assembly.
• The listed color is black.
• Designed for standard AR variants.
• It is not compatible with the CMMG MkW platform.

Built with service-grade steels and protective finishes, this CMMG BCG provides a straightforward, materials-focused solution for AR-15 rifles chambered in 6.5 Grendel or 6mm ARC. Its specification set emphasizes durability and compatibility for shooters who need a dependable, drop-in bolt carrier group for range use, hunting, or precision applications.