| Platform | Mk4 |
| Caliber | 5.56x45mm |
| Operating System | Compact Action-Direct Impingement |
| Barrel Length | 6.5 |
| Barrel Twist | 1:7 |
| Barrel Contour | MT |
| Barrel Material | 4140CM, SBN |
| Barrel Twist | 1:7 |
| Muzzle Device | CMMG ZEROED Linear Compensator |
| Muzzle Thread | 1/2 x 28 |
| Gas Port Location | Pistol |
| Gas Block | Adjustable 0.750" |
| Upper Receiver | DISSENT 7075 T6 Aluminum |
| Lower Receiver | Mk4 Forged 7075 T6 Aluminum |
| Hand Guard | CMMG 5.5" 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 | Magpul 30rd PMAG |
| Weight | 5.6 lbs |
| Length | 16.5" - 26" |
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, 5.56MM, 6.5"
The next evolution of the AR15. Chambered in the iconic 5.56x45mm cartridge, the DISSENT® is unlike any other AR SBR, ditching the buffer tube and traditional AR recoil system in favor of our patent-pending Compact Action.
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 BANSHEE NFA SBRs (short barrel rifles) require additional ATF paperwork & processing. See linked CMMG Resource article for more information.
Adjustable Gas Block
If you’re looking to shoot suppressed or just fine tune your DISSENT to your preferred ammo, the adjustable gas block gives you the freedom to dial in the gas system exactly to your liking. Never too much and never too little.
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