The CMMG Zeroed lower parts kit is a black lower receiver parts kit that includes an ambidextrous safety selector. Distributors list it as the MK3 version and as part of CMMG's gun builder line. Confirm your lower is a CMMG MK3-compatible receiver before ordering.
- Brand: CMMG
- Line: CMMG Zeroed
- Version: MK3 (per distributor)
- Selector: ambidextrous
- Color: black
- Manufacturer part #: 38CA677
- UPC: 810097502338
