| PLATFORM | MK57 |
| CALIBER | 5.7X28MM |
| OPERATING SYSTEM |
RADIAL DELAYED BLOWBACK
|
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
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