| Platform | Mk3 |
| Caliber | 8.6 BLK |
| Operating System | Direct Impingement |
| Barrel Length | 16.1 |
| Barrel Twist | 1:3 |
| Barrel Contour | MT |
| Barrel Material | 4140CM, Nitride Finish |
| Barrel Twist | 1:3 |
| Muzzle Device | CMMG ZEROED Muzzle Brake |
| Muzzle Thread | 5/8 x 24 |
| Gas Port Location | Carbine |
| Gas Block | Adjustable 0.750" |
| Upper Receiver | Billet 7075 T6 Aluminum |
| Lower Receiver | Mk3 Billet 7075 T6 Aluminum |
| Hand Guard | CMMG EML15 M-LOK |
| Finish | Cerakote |
| Charging Handle | CMMG ZEROED Ambi |
| Pistol Grip | CMMG ZEROED Pistol Grip |
| Buffer Type | Carbine, Mk3 |
| Receiver Extension | CMMG 6 Position Fastback w/Ambi Sling Plate |
| Stock / Brace | CMMG RipStock |
| Trigger Type | ZEROED Drop-In Single Stage |
| Trigger Guard | Integrated |
| Safety Selector | CMMG ZEROED 60/90 Degree |
| Magazine | Magpul 20rd PMAG |
| Weight | 8 lbs |
| Length | 34" |
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.
RESOLUTE, Mk3, 8.6 BLK, 16.1"
8.6 BLK, the round that gives you more rifle with less barrel. Thanks to the quick 1:3 twist rate, 8.6 BLK hits it full ballistic potential with a much shorter overall barrel length compared to its AR10 contemporaries. If you're a fan of hunting suppressed then this is definitely the round for you, grab your new 8.6 BLK RESOLUTE®, suppressor, and subsonic ammo and show those 300 BLK fans what stopping power means.
Although there can be a lot of confusion with .308/AR10 AR platforms, CMMG has kept it simple by basing our Mk3 platform off the popular Gen 1 DPMS High-Pattern LR308 design, which means greater parts availability and more customization potential.
When full-size rifles are too cumbersome and pistols/SBRs don’t deliver the long-range ballistic performance you need, the CMMG RESOLUTE line of carbine length rifles is the answer. Fitted with the suite of ZEROED parts and accessories as well as our legendary RIPSTOCK, the RESOLUTE is the rifle that’s never out of place. The new EML™ 15 handguard brings style to the next level. M-LOK® attachment slots are found where expected at the 3, 6, and 9 o’clock positions as well as on top at 12 o’clock with the omission of a full-length Picatinny section found on our previous handguard. This reduces weight while the additional M-LOK section still gives shooters a place to mount those must-have accessories. With a range of choices, just pick the caliber you need for the job and let your rifle do the talking.
Mk3 ZEROED parts and accessories – Quality comes standard
The AR platform is well known for its capability for customization but picking the right parts doesn’t have to be a nightmare of homework. CMMG’s ZEROED parts and accessories are made here in the USA with quality and attention to detail that is second to none and each RESOLUTE comes equipped with a slew of ZEROED parts standard, including:
ZEROED .308 Ambi Charging Handle
ZEROED Extended Mag Release Button
ZEROED Polymer Dust Cover .308
ZEROED Muzzle Brake 8.6/.338
Lifetime Quality Guarantee
We aim to please, that’s why every CMMG product is backed by our Lifetime Quality Guarantee against material or workmanship defects. Learn More.
~Firearms shipping to states with magazine capacity restrictions will only ship with 10rd magazines in place of standard capacity magazines. CMMG does not address any other state compliancy requirements for further restricted states.