| Platform | Mk4 |
| Caliber | .22 ARC |
| Operating System | Direct Impingement |
| Barrel Length | 16.1 |
| Barrel Twist | 1:7 |
| Barrel Contour | MT |
| Barrel Material | 4140CM, SBN |
| Barrel Twist | 1:7 |
| Muzzle Device | CMMG ZEROED Muzzle Brake |
| Muzzle Thread | 1/2 x 28 |
| Gas Port Location | Rifle |
| Gas Block | Adjustable 0.750" |
| Upper Receiver | Billet 6061 T6 Aluminum |
| Hand Guard | CMMG EML15 M-LOK |
| Finish | Cerakote |
| Charging Handle | CMMG ZEROED Ambi |
| Weight | 4.3 lbs |
| Length | 25" |
Due to high demand and supply chain issues affecting many industries, some of our parts and accessories may be on backorder and have an extended lead time. Items currently on backorder can still be purchased and can typically be shipped within 25 business days.
Upper Group, RESOLUTE, Mk4, 22 ARC, 16.1"
Top off your next precision carbine build with this RESOLUTE® Mk4 Upper Group. Chambered in 22 ARC, this upper group brings 22-250 performance to the AR15 platform and comes ready to pair with the AR15 lower group of your choice. Available in seven different Cerakote finishes, all CMMG® Upper Groups come complete with bolt carrier group and ZEROED™ accessories including:
ZEROED AR15 Polymer Dust Cover
ZEROED AR15 Ambi Charging Handle
We aim to please, that’s why every CMMG product is backed by our Lifetime Quality Guarantee against material and workmanship defects. Learn More.