DISSENT BR4 Armor Black in .300 AAC Blackout with a 14.5″ threaded barrel pinned and welded to a 16.1″ overall length. Includes two Magpul 10-round PMAGs and a Magpul SGA stock; adjustable gas block.
The CMMG Dissent BR4 is a purpose-built AR-style carbine chambered in .300 AAC Blackout with a 14.5 inch threaded barrel that is pinned and welded to produce a 16.1 inch overall length. It ships in Armor Black Cerakote with a Magpul SGA stock and includes two 10-round Magpul PMAGs. The Dissent BR4 offers an adjustable gas block and a reversible side charger to support suppressed use and ammunition tuning.
For optics, a versatile choice under $1000 is the Vortex Strike Eagle 1-6×24, which provides a useful magnification range for close to intermediate engagements and pairs well with the BR4’s carbine configuration.
Applications: suppressed shooting for reduced report and recoil, and general-purpose short-range hunting or precision brush/carbine work.
Product Specifications
The UPC is 840442500214.
The manufacturer is CMMG.
The model name is Dissent BR4.
The manufacturer part number is 30A5C0FAB.
The caliber is .300 AAC Blackout.
The capacity is 10 + 1.
The barrel length is 14.50 inches.
The rate of twist is 1:7.
The barrel is described as threaded.
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.
The operating system is Compact Action – Direct Impingement.
The stock is a Magpul SGA (black).
The weight is 7.60 lbs and the overall length is 36.5 inches.
The Dissent BR4 brings a modern, user-tunable AR platform to shooters who want a compact .300 Blackout carbine that is set up for suppressed shooting and magazine-limited compliance. Its pinned and welded muzzle brake yields a legal overall length while preserving a short-barrel profile, and the adjustable gas block lets you tune the action for varied loads or a suppressor. The package’s Magpul SGA stock and included PMAGs make it ready for immediate use in the field or on the range.
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