The CMMG Dissent BR4 is a compact AR-style carbine chambered in .300 Blackout with a 14.5″ barrel and a pinned & welded ZEROED SVD muzzle brake that brings the overall barrel length to 16.1″. It ships with two Magpul 10-round PMAGs and includes an adjustable gas block and reversible side charger for tuning and user preference. The rifle is finished in Armor Black Cerakote and uses 7075 T6 aluminum receivers to balance weight and durability.
Key Specifications
- The caliber is .300 Blackout.
- The barrel length is 14.5 inches.
- The overall barrel length with the pinned device is 16.1 inches.
- The magazine configuration includes (2) Magpul 10-round PMAGs.
- The muzzle device is a CMMG Zeroed SVD brake pinned & welded.
- The muzzle thread is 5/8 x 24.
- The gas block is an adjustable 0.750 unit and the gas port is set at carbine location.
- The upper receiver is Dissent 7075 T6 Aluminum and the lower is BR4 billet 7075 T6 Aluminum.
- The finish is Armor Black Cerakote.
- The twist rate is 1:7.
Designed for compact handling and suppression-ready setups, the Dissent BR4 pairs practical ergonomics with durable materials and user-adjustable features. Its pinned and welded muzzle device, adjustable gas system, and reversible side charger make it well suited for shooters seeking a configurable, state-compliant .300 Blackout carbine option that accommodates controlled-capacity magazines and a range of ammunition types.
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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