Upper receiver assembly with forward assist, dust cover and gas deflector. For AR15-Mk9, M4 9mm and .22.
- For: AR15-Mk9, M4 9mm and .22 - Type: Mil-Spec M4 Style Upper Receiver - Material: Forged 7075-T6 Aluminum - Finish: Type III Hard Anodized - Includes installed forward assist dust cover and gas deflector.
Manufacturer: CMMG Model: 55BA222
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