Description
.308 BCG. Complete Your AR-10 Build.
This bolt carrier group has everything you need to complete your AR-10, or your AR-10 upper receiver build. Featuring a 9310 steel, phosphate finish bolt, a 8620 steel, chrome lined, phosphate finish carrier, and a S7 tool steel, phosphate finish extractor. Since the Bolt Carrier Group (BCG) is such an integral piece of your AR-15 build, don’t settle for anything less than the best.
The Leading Manufacturer Of AR-15 Rifles.
CMMG is the leading manufacturer of AR-15 rifles, components and small parts. CMMG has carved out a reputation for innovation by engineering AR technologies that blaze new trails.
CMMG Bolt Carrier Group BCG .308 AR-10 Specs
Manufacturer: CMMG
Model: Bolt Carrier Group BCG .308 AR-10
Caliber: .308
Bolt: 9310 Steel, Phosphate Finish
Carrier: 8620 Steel, Chrome Lined, Phosphate Finish
Extractor: S7 Tool Steel, Phosphate Finish
UPC: 81583501248



![[56200-0503] Frame Seat (Rubber Feet Front) for WEN 56200i](https://www.greatdiyhardware.com/wp-content/uploads/2026/07/56200-0503-frame-seat-rubber-feet-front-wen-56200i.webp)
![[P55340] Starting Key (2-Pack)](https://www.greatdiyhardware.com/wp-content/uploads/2026/07/p55340-starting-key-2-pack.webp)