CMMG Dissent BR4 | .300 AAC Blackout | 16.10 in | 10+1

The CMMG Dissent BR4 is a California-compliant AR-style rifle chambered in .300 AAC Blackout, built around a 16.10 inch threaded Black Nitride barrel and a coyote tan Cerakote Picatinny rail aluminum receiver. It ships with a Magpul SGA black synthetic stock and two Magpul 10rd PMAG magazines, and features a Zeroed single-stage trigger and Crossbolt safety for straightforward operation. The rifle’s configuration supports both subsonic and supersonic .300 BLK loadings for a range of practical applications.

An optic such as the Vortex Strike Eagle 1-6×24 pairs well with this platform for quick target acquisition and precise close- to mid-range shots while remaining under the $1,000 optics threshold. Recommended applications include hunting and target shooting.

Product Specifications

• The caliber is .300 AAC Blackout for compatibility with standard .300 BLK ammunition.
• The barrel measures 16.10 inches and features a threaded profile.
• The barrel is described as Threaded to accept muzzle devices or suppressors where legally permissible.
• The barrel length range is listed as 16 to 16.99 inches.
• The capacity is 10 + 1 in compliance with California restrictions for this model.
• The muzzle device is a CMMG Zeroed Muzzle Brake.
• The overall length is 38.10 inches for general handling and storage considerations.
• The receiver material is Aluminum.
• The stock is a Magpul SGA in black synthetic construction.
• The safety type is a Crossbolt safety.
• The trigger is a Zeroed Single Stage unit.
• The rate of twist is 1:7.
• The unloaded weight is 7.80 lbs.
• The weight range is 7 to 7.99 lbs.
• The UPC is 840442500306.

Well-specified and purpose-built, this CMMG Dissent BR4 balances practical features and compliance for users who need a CA-legal .300 BLK platform. The combination of a threaded Black Nitride barrel, full-length Picatinny rail, and Magpul SGA stock delivers a familiar AR ergonomics package with modern component choices. Whether preparing for field use or range sessions, the Dissent BR4 offers a straightforward, durable option that pairs easily with a versatile low- to mid-power optic.

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