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Lower Receiver Assembly, Mk57
For building your AR lower group to your specs, the Mk57 Lower Receiver Assembly accepts AR15 trigger groups, safeties, and grips. It pairs with CMMG 5.7x28mm Radial Delayed Blowback uppers and provides maximum compatibility with FN Five-seveN pattern magazines. Lifetime Quality Guarantee. Mk57 Lowers are designed for use with CMMG 5.7x28mm Radial Delayed Blowback uppers only.
Specifications
- Manufacturer:
- Cmmg
- Category:
- Lower Receiver
- MPN:
- 57CA2CB
- Required Component:
- Yes
- Complete Firearm:
- No
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