| Platform | Mk4 |
| Caliber | .22 LR, .300 BLK, .350 Legend, 4.6x30mm, 5.56mm, 5.56x45mm, 6.5 Grendel, 6mm ARC, 9mm |
| Lower Receiver | Mk4 Forged 7075 T6 Aluminum |
| Finish | Cerakote Standard |
| Pistol Grip | CMMG ZEROED Pistol Grip |
| Buffer Type | Carbine |
| Receiver Extension | CMMG 6 Position Fastback Extension |
| Stock / Brace | CMMG RipStock |
| Trigger Type | Mil-Spec Single Stage |
| Trigger Guard | CMMG ZEROED Trigger Guard |
| Safety Selector | CMMG ZEROED 60/90 Degree |
| Weight | 2.2 lbs |
| Length | 14.9" |
Please Allow 15-30 Days To Process Your Order.
State/local restrictions may apply in CA, CO, CT, DE, DC, HI, IL, MD, MA, MI, NJ, NY, or WA. Customers must review our Firearms Shipping Policy prior to ordering.
Firearms with attached pistol brace. Please confirm your FFL is accepting transfers for pistol brace equipped firearms prior to ordering.
LOWER GROUP, RESOLUTE, Mk4, Mil-Spec Trigger
There is no doubt just how capable and popular the AR15(Mk4) platform is, and while most plain mil-spec AR15 lowers could do the job for your next build, you don’t have to settle for just good enough. Available in seven different Cerakote finishes, this RESOLUTE® Mk4 lower group comes with a suite of CMMG® parts and accessories you won’t find anywhere else. Lower group includes:
ZEROED Extended Mag Release Button
We aim to please, that’s why every CMMG product is backed by our Lifetime Quality Guarantee against material and workmanship defects. Learn More.