The CMMG Dissent BR4 is an AR-platform rifle built around the 5.56x45mm cartridge and configured for jurisdictions that require non‑threaded barrels and reduced magazine capacities. It features an EMPIRE-profile unthreaded barrel with a recessed crown and ships with two 10‑round Magpul PMAGs in the pictured configuration. The Dissent BR4 pairs a reversible side charger and CMMG’s BR4-specific ZEROED single-stage trigger with a Cerakote finish for durable, compliant service.
Key Specifications
- The caliber is 5.56x45mm.
- The barrel measures 16.1 inches (unthreaded).
- The barrel material/finish is 4140CM, Nitride finish.
- The barrel twist rate is 1:7.
- The barrel contour is MT (medium taper).
- The handguard is a 13.50-inch M-LOK proprietary design.
- The gas block is Adjustable 0.750.
- The rifle ships with (2) Magpul 10rd PMAGs.
- The unloaded weight is 7.7 lbs.
- The overall length is 36.7 inches.
Purpose-built to meet regulated-state requirements while retaining AR functionality, the Dissent BR4 is suited for range use, training, and owners who require a compliant AR configuration without sacrificing core ergonomics and controls. Its combination of a nitrided EMPIRE-profile barrel, adjustable gas block, and Magpul-compatible furniture offers a practical, reliable package for informed shooters seeking a quality build in an AR-format rifle.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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