| Platform | Mk4 |
| Caliber | 5.56x45mm |
| 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 A2 Flash Hider |
| Muzzle Thread | 1/2 x 28 |
| Gas Port Location | Mid |
| Gas Block | 0.750 Non-Adjustable |
| Upper Receiver | Billet 6061 T6 Aluminum |
| Hand Guard | CMMG EML15 M-LOK |
| Finish | Cerakote |
| Charging Handle | Not Included |
| Weight | 3.6 lbs |
| Length | 25" |
Expected to ship within 15-30 business days. AR Parts Notice - State/local restrictions may apply in CT, DC, IL, MA, NJ, NY, or WA. Customers must review our Shipping Policy prior to ordering.
UPPER GROUP, RESOLUTE, Mk4, 5.56X45MM NATO, 16.1", No BCG or Charging Handle
Make the quick switch to a 5.56mm carbine with this RESOLUTE® Mk4 Upper Group. This upper group does NOT include BCG or charging handle. Available in a variety of Cerakote finishes.
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