Description
- Complete Mk3 bolt carrier group
- Extractor is S7 Tool Steel, Phosphate Finish
- Carrier is 8620 Steel, Chrome Lined, Phosphate Finish
CMMG Part Black Bolt Carrier Group (38BA423) for the AR-10 platform. This bolt carrier group has everything you need to complete your AR-10, or your AR-10 upper receiver build.
Warranty Information
Bolt | 9310 Steel, Phosphate Finish |
Carrier | 8620 Steel, Chrome Lined, Phosphate Finish |
Extractor | S7 Tool Steel, Phosphate Finish |