THIS PRODUCT IS BACKED BY THE CMMG LIFETIME QUALITY GUARANTEE.
Parts Kit, Bolt Carrier Maintenance, Mk57, 5.7x28mm
Replacement firing pin, retaining pin, and cam pin for Mk57 firearms.
Kit Includes:
- Mk57 (5.7×28) Firing Pin
- Firing Pin Retaining Pin
- Mk57 Cam Pin
Technical Specifications
| Platform | Mk57 |