The CMMG Dissent BR4 is chambered in .223 Rem/5.56 NATO and built around a compact platform. At 38.1 inches overall with a 16.1-inch barrel and an 8 lb weight, it hits the practical middle ground between a carbine and something shorter. The Zeroed Drop-In Single Stage trigger gives a clean pull with minimal travel, and the cross-bolt safety is intuitive to operate. 
 

Key Specifications 

• SKU: 2024036421 
• UPC: 840442500146 
• Condition: New in Box 
• Safety: Cross-Bolt 
• Trigger: Zeroed Drop-In Single Stage 
• Grip: Standard 
• Weight: 8 lbs 
• Length: 38.1 inches 
• Barrel Length: 16.1 inches 
• Barrel Twist: 1:7" 
• Capacity: 10 rounds 
• Caliber: .223 Rem/5.56 NATO 
• Model Name: Dissent 
• Brand: CMMG 
   

Detailed Features 

 
The Zeroed Drop-In Single Stage trigger has a crisp break and short reset, which helps with accurate follow-up shots. The cross-bolt safety keeps the mechanism simple and reliable. At 16.1 inches, the barrel is long enough to get good velocity from the .223/5.56 cartridge while keeping the overall length reasonable for indoor or vehicle use. The 1:7" twist stabilizes the full range of .223 and 5.56 bullet weights, so you're not locked into a narrow ammunition selection.

Most owners of the CMMG Dissent BR4 come away positive, particularly on reliability and portability.

The compact format gets consistent praise. It handles well and moves easily, which matters for users who carry it in the field or work in tighter spaces. Reliability with both .223 and 5.56 ammunition is frequently mentioned — owners report low malfunction rates across varied ammo, which builds confidence.

Price and accessories are the main friction points. Some buyers feel the cost is fair given the feature set; others compare it unfavorably against similar rifles at lower prices. Ergonomics are generally well received, though a few users suggest improvements to the grip or stock adjustments for personal fit.

Overall, the Dissent BR4 is well regarded for what it does: a compact, reliable .223/5.56 platform that works across home defense, sport shooting, and field use.