Description
CMMG Mk4 upper receiver Assembly with dust cover and forward assist installed. Perfect to start a build. Does not come with charging handle bolt carrier group, barrel nut or delta ring. It is forged of 7075 T6 aluminum.
Specifications
| Type | Upper Receiver |
|---|---|
| Model | AR-15 |
| Size | 223 |
| Material | 7075 T6 Aluminum |
| Finish | Black |
