F-1 Firearms DuraBolt BCG Assembly - .223/5.56 - Chrome
The F-1 Firearms DuraBolt Black Nitride direct impingement full auto rated M16/M4 bolt carrier group, for use in AR15 platforms, is compatible with mil-spec receivers and associated components. The bolt carrier and bolt are ground after heat treat to ensure tolerances.
- CRN Coated, Silver
- Carpenter 158 bolt that is ground after heat treat
- 8620 Steel Construction
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information, go to www.P65Warnings.ca.gov.