Upper Receiver Assembly, Mk4/AR15, Forward Assist
Whether it’s the classic style or forward assist functionality that piques your interest, the Mk4 AR15 upper receiver assembly has been a staple in the CMMG® lineup. Available in six different Cerakote finishes, this mil-spec workhorse has been proven over the years and makes a great base to build your next AR15 upper group.
SPECS
| PLATFORM | MK4 |
| UPPER RECEIVER | FORGED 7075-T6 ALUMINUM M4 TYPE |
| FINISH | CERAKOTE ARMOR BLACK |
Lifetime Quality Guarantee
We aim to please, that’s why every CMMG product is backed by our Lifetime Quality Guarantee against material and workmanship defects.
