| 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 0.750" |
| Upper Receiver | DISSENT 7075 T6 Aluminum |
| Lower Receiver | Br4 Billet 7075 T6 Aluminum |
| Hand Guard | CMMG 13.5" 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 | 36.7" |
Due to high demand and supply chain issues affecting many industries, some of our parts and accessories may be on backorder and have an extended lead time. Items currently on backorder can still be purchased and can typically be shipped within 25 business days.
Rifle, DISSENT, Br4, 5.56mm, 16.1", Non-Threaded
CMMG starts every project with one of the most popular AR-15 calibers in mind, the 5.56. The Br4, was no different and was designed for Americans residing in states with restrictions a lot of us can't 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 wasn't good enough, CMMG found low hanging fruit for states that don't 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 16.1" 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. Learn More.
~Br4 rifles will ship with 10rd magazines for most states and 5rd magazines for states with additional magazine capacity restrictions.