The CMMG Upper Receiver Assembly for Mk4/ AR-15 Armor Black is available at Nautilus Arms.
Expertly crafted from aircraft grade aluminum, CMMG Mk4/AR15 upper receiver assemblies come with our ZEROED Polymer Dust Cover pre-installed. Available in seven different Cerakote finishes, this upper receiver omits the forward assist for those looking for a sleek and stylish base to start a new AR15 build.
Featuring an enlarged ejection port, the CMMG Mk4 upper receiver can accommodate a variety of pistol calibers like 9mm, 10mm,.40 S&W, and.45 ACP and is compatible with CMMG MkG, MkGs, Mk10, Mk9, and Mk17 lower receivers. NOTE: This upper is not compatible with CMMG fixed ejector Radial Delayed Blowback BCGs.
We aim to please, thats why every CMMG product is backed by our Lifetime Quality Guarantee against material and workmanship defects.
Features
- Armor Black
- Platform Mk4
- Upper Receiver Billet 6061 T6 Aluminum
- Finish Cerakote Standard
Specifications
| Brand | Cmmg |
|---|---|
| Caliber | 223 Rem/5.56 Nato |
| Barrel Length | 14.5" |
| Color | Black |
| Material | Aluminum |
| Barrel Finish | Matte Black |
| Barrel Material | Steel |
| Rate Of Twist | 1:7" |
| Upper Type | Assembled Upper |
| MPN | 55BA290AB |
| UPC | 810097506329 |
WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
