- Fits M16/AR-15 Bolt Carrier Groups
- Prevents Firing Pin Migration During Cycling
- Mil-Spec Replacement Part
- Color: Black
- MPN: 55BA4C5
The CMMG M16/AR-15 Firing Pin Retainer is a mil-spec replacement part for M16 and AR-15 bolt carrier groups, designed to retain the firing pin and prevent it from walking out during cycling.
