Details

Rifle, DISSENT, Br4, 5.56mm, 16.18#x34;, Non-Threaded

CMMG starts every project with one of the most popular calibers in mind, 5.56mm. The Br4, was no different and was designed for Americans residing in states with restrictions a lot of us can9t comprehend or relate to. Now introducing the Br4 with an all-new EMPIRE profile unthreaded barrel and a recessed barrel crown. As if this new Br4 platform wasn9t good enough, CMMG found low hanging fruit for states that don9t allow threaded barrels. Like the entire Br4 lineup, this upper group compliments the firearm nicely and a lower group that accepts 5.56 AR mags.

The 16.18#x34; firearm ships with (2) 10rd Magpul PMags, Remington 870 stock compatible, cross-bolt safety, forward non-reciprocating side charger, a proprietary Zeroed single stage trigger and your choice of (7) colors.


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.



~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.

Platform Br4
Caliber 5.56x45mm
Operating System Compact Action-Direct Impingement
Barrel Length 16.1
Barrel Twist 1:7
Barrel Contour MT
Barrel Material 4140CM, Nitride Finish
Barrel Twist 1:7
Muzzle Device N/A
Muzzle Thread N/A
Gas Port Location Mid
Gas Block Adjustable 0.7508#x34;
Upper Receiver DISSENT 7075 T6 Aluminum
Lower Receiver Br4 Billet 7075 T6 Aluminum
Hand Guard CMMG 13.58#x34; Proprietary
Finish Cerakote
Charging Handle Dissent Side Charger - Reversible
Stock / Brace Magpul SGA - Remington 870
Trigger Type ZEROED Single Stage Br4 Specific
Trigger Guard Integrated
Safety Selector Reversible Cross Bolt
Magazine Magpul 10rd PMAG (2)
Weight 7.7 lbs
Length 36.78#x34;

Specifications