Description
CMMG Mk4/AR15 upper receiver assembly in Armor Black finish, made from aircraft grade aluminum. This upper receiver assembly omits the forward assist and comes with the ZEROED polymer dust cover pre-installed. It’s designed as a streamlined foundation for starting a new AR15 build using a Mk4 upper receiver assembly.
Key details
- Aircraft grade aluminum construction
- ZEROED polymer dust cover pre-installed
- Forward assist omitted
- Armor Black finish
| Material | Aircraft grade aluminum |
|---|---|
| Finish | Armor Black |
| Dust cover | ZEROED polymer dust cover (pre-installed) |
| Forward assist | Omitted |
