This CMMG firing pin retainer is a replacement for the pin that holds the firing pin in the bolt carrier. It fits CMMG Mk3 and LR-308 pattern bolts, making it a useful spare for AR-10 style rifles. It is made from steel.
- Brand: CMMG
- Type: Firing pin retainer
- Fits: CMMG Mk3 and LR-308 bolts
- Material: Steel
- Manufacturer part number: 38BA4A9
