| Platform | Mk4 |
| Caliber | 9mm |
| Operating System | Compact Action-Radial Delayed Blowback |
| Barrel Length | 10.5 |
| Barrel Twist | 1:10 |
| Barrel Contour | MT |
| Barrel Material | 4140CM, SBN |
| Barrel Twist | 1:10 |
| Muzzle Device | CMMG ZEROED Linear Compensator |
| Muzzle Thread | 1/2 x 28 |
| Gas Port Location | N/A |
| Gas Block | N/A |
| Upper Receiver | DISSENT 9mm 7075 T6 Aluminum |
| Lower Receiver | Mk4 Forged 7075 T6 Aluminum |
| Hand Guard | CMMG 9.6" Proprietary |
| Finish | Cerakote |
| Charging Handle | Dissent Side Charger - Reversible |
| Pistol Grip | CMMG ZEROED Pistol Grip |
| Buffer Type | N/A |
| Receiver Extension | DISSENT Folding Stock Adapter |
| Stock / Brace | DISSENT Side Folding Stock |
| Trigger Type | ZEROED Drop-In |
| Trigger Guard | CMMG ZEROED Trigger Guard |
| Safety Selector | CMMG ZEROED 60/90 Degree |
| Magazine | CMMG 30rd (2) |
| Weight | 6.6 lbs |
| Length | 20.4" - 30.3" |
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.
SBR, DISSENT, Mk4, 9MM, 10.5"
If there were one word used to describe a Mk4 DISSENT®, adaptable would have to be it. Chambered in 9mm with a 16.1" barrel, this DISSENT utilizes our 9mm AR Conversion Magazines that feature the same profile and dimensions as a standard 5.56mm PMAG. Not only does this allow for easy use with existing mag pouches, but the Mk4 DISSENT lower also makes for a seamless transition to virtually every other DISSENT caliber offering, when paired with a matching caliber magazine.
Available in a variety of custom Cerakote finish options; the rear of the DISSENT SBR features the DISSENT side folding stock with adjustable length of pull and adjustable cheek riser. A forward non-reciprocating charging handle allows for quick and easy manipulation without coming off target and the M-LOK handguard with top picatinny rail provides ample mounting space for whatever accessories you please.
**All NFA rules apply** All DISSENT NFA SBRs (short barrel rifles) require additional ATF paperwork & processing. See linked CMMG Resource article for more information. Learn more about NFA rules.
Radial Delayed Blowback™ Compact Action
9mm ammo loadings can vary greatly, from supersonic to subsonic. With a wide range of bullet weights comes new engineering challenges in a new platform. The 9mm Radial Delayed Blowback Compact Action addresses these challenges by utilizing a fixed ejector in the upper receiver. Added benefits are a lighter BCG with less felt recoil while providing consistent performance with a wide range of ammo.
Lifetime Quality Guarantee
We aim to please, that’s why every CMMG product is backed by our Lifetime Quality Guarantee against material and 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.