- Fits AR-308/MK3 Bolt Carrier Group
- Mil-Spec Firing Pin Retainer
- Prevents Firing Pin Migration During Cycling
- Color: Black
- MPN: 38BA4A9
The CMMG AR-308/MK3 Firing Pin Retainer is a mil-spec replacement part for AR-308/MK3 bolt carrier groups, designed to retain the firing pin and prevent it from walking out during cycling.
