CMMG 55A520BMB Dissent BR4 5.56 NATO 16.1" 11-Round Threaded Barrel Rifle

The CMMG Dissent BR4 5.56 NATO 16.1" Threaded Barrel Rifle is a purpose-built modern sporting rifle engineered for shooters who demand modularity, reliability, and precision in a compact platform. Designed for law enforcement, military, and civilian tactical applications, this rifle balances maneuverability with ballistic performance in environments where carbine-length ergonomics matter. The 16.1-inch barrel length provides the optimal balance between velocity retention and handling ease, making it effective for both close-quarters and intermediate-range engagements without excessive length-of-pull concerns.

At 10 pounds, the Dissent BR4 delivers a lightweight platform without sacrificing structural rigidity or heat management during sustained fire. The threaded barrel design accepts industry-standard suppressors and muzzle devices, critical for shooters prioritizing noise reduction, recoil management, or flash mitigation in tactical scenarios. CMMG's modular design philosophy ensures the rifle's upper and lower receivers are fully compatible with standard AR-platform components, enabling customization of triggers, furniture, optics mounts, and rail systems to match individual mission requirements and ergonomic preferences without custom gunsmithing.

Law enforcement patrol units, tactical teams, and civilian precision rifle competitors will appreciate the Dissent BR4's predictable AR-pattern controls and aftermarket ecosystem. The 11-round magazine capacity delivers practical firepower while supporting compliance in restrictive jurisdictions. Feed reliability with factory and commercial 5.56 NATO and .223 Remington ammunition has been proven across thousands of operational deployments and training cycles. Installation of optics, lights, and backup sights requires standard Picatinny rail interfaces—no specialized adapters necessary, ensuring rapid reconfiguration in the field.