THIS PRODUCT IS BACKED BY THE CMMG LIFETIME QUALITY GUARANTEE.
UPPER GROUP KIT, Resolute 100, MK4, 5.56 x 45MM, 25RD .22LR KIT
This bundle kit comes with a CMMG RESOLUTE 100 Series 5.56 complete upper receiver that is compatible with any mil spec AR15 lower receiver. It also includes a CMMG .22 LR Conversion Kit, which allows you to shoot .22 LR ammunition from the RESOLUTE 100 Series Upper by swapping the bolt carrier group to the conversion. The .22 LR Conversion is all Stainless Steel and comes with one 25 Round magazine. From training to defense, plinking to hunting, this kit provides you the versatility to conquer whatever comes your way. Two calibers, one upper, no tools… endless possibilities.
All of our Upper Groups come complete with BCG.
Technical Specifications
| Platform | Mk4 |
| Caliber | 5.56x45mm, .22 LR, 5.56mm |
| Barrel Length | 16.1 |
| Barrel Twist | 1:7 |
| Barrel Contour | MT |
| Barrel Material | 4140CM, SBN |
| Barrel Twist | 1:7 |
| Muzzle Device | CMMG A2 Compensator |
| Muzzle Thread | 1/2 X 28 |
| Gas Port Location | Mid |
| Gas Block | 0.750" Non-Adjustable |
| Upper Receiver | Forged 7075-T6 AL M4 type upper |
| Hand Guard | CMMG RML15 M-LOK |
| Finish | Hard Coat Anodized Receivers and Hand Guard (Can be upgraded to Cerakote) |
| Charging Handle | CMMG Mil-Spec |
| Magazine | CMMG 25rd |
| Weight | 4.5 |