The CMMG DISSENT BR3 is a compact AR10-style rifle chambered in .308 Win with a 16.1 inch barrel. It pairs traditional controls and furniture compatibility with modern features such as a full-length Picatinny top rail, an M-LOK handguard, and an adjustable gas block for suppressed or unsuppressed use. The platform accepts Remington 870-pattern Magpul SGA stocks and is compatible with DISSENT Mk3 upper groups.
Key Specifications
- The rifle is chambered in .308 Win.
- The barrel measures 16.1 inches.
- The magazine capacity ships as 10 + 1.
- The upper and lower receivers are made from 7075-T6 aluminum.
- The barrel material and finish is 4140CM with a nitride finish.
- The muzzle device is a CMMG ZEROED Muzzle Brake and the muzzle is threaded 5/8 x 24.
- The gas block is adjustable (0.750 inches) to tune the gas system.
- The handguard is a CMMG 15-inch proprietary M-LOK design for accessory mounting.
- The charging handle is a DISSENT side charger (reversible).
- The stock is a Magpul SGA — Remington 870 pattern.
The DISSENT BR3 is built as a modern, utility-focused platform that blends familiar ergonomics with contemporary upgrades. Its adjustable gas system and accessory-ready handguard make it adaptable for a range of shooting roles including sporting, hunting, and precision applications where a compact .30-caliber platform is preferred.
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