The CMMG Dissent Br4 in .300 Blackout (CMMG part no. 30A650ACT) is a restricted-state version of the Dissent with a Magpul SGA stock and a 16.1-inch barrel in Coyote Tan Cerakote. CMMG calls the Br4 the rifle for restricted states, pairing traditional controls with a full-length top Picatinny rail and an M-LOK handguard. The .300 BLK chambering is adaptable for self-defense, hunting and target shooting. It is for shooters in restricted states who want a modern .30 caliber carbine.

Key Specifications

• The chambering is .300 BLK, a .30 caliber cartridge with subsonic and supersonic loads.
• The barrel is 16.1 inches with a 1:7 twist, made of 4140CM steel.
• The magazines are two Magpul 10-round PMAGs that come with the rifle.
• The stock is a Magpul SGA with a Remington 870 pattern, a classic shape with modern adjustments.
• The safety is a reversible cross bolt, which can be set up for right- or left-handed shooters.
• The muzzle device is a ZEROED SVB brake on 5/8×24 threads.
• The gas block is adjustable 0.750-inch for suppressed use or fine-tuning.
• The handguard is a CMMG 15-inch proprietary M-LOK design with a full-length top Picatinny rail.
• The trigger is a ZEROED drop-in single stage with an integrated trigger guard.
• The rifle weighs 7.8 pounds with a 38.1-inch overall length.

Frequently Asked Questions

Why is the Br4 called a restricted-state rifle? CMMG describes the Br4 as the rifle for restricted states, giving people in those states a modern carbine.

What thread pitch is the muzzle? The muzzle is threaded 5/8×24 and carries a ZEROED SVB brake.

How many magazines does it come with? Two Magpul 10-round PMAGs.

Buy the CMMG Dissent Br4 Rifle, .300 Blackout, 16.1-Inch, Coyote Tan, Restricted-State Model, 10-Round

CMMG builds its ZEROED rifles for shooters who want a complete, ready-to-run setup. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more rifles in our AR rifles.