CMMG DISSENT Mk4 | .300 BLK | 14.5in Pistol

The CMMG DISSENT Mk4 is an AR-style pistol built around the .300 BLK cartridge with a 14.5″ barrel pinned and welded to achieve a legal overall length. It uses a direct impingement operating system and features CMMG ZEROED components designed for modular setup and suppressed use. For optics, a red-dot such as an Aimpoint PRO pairs well for rapid target acquisition on short- to mid-range engagements and is widely compatible with AR-style pistols.

Good real-world applications include suppressed shooting with subsonic .300 BLK loads and short- to mid-range target / tactical training.

Product Specifications

• The platform is Mk4.
• The caliber is .300 BLK.
• The barrel measures 14.5 inches and is pinned and welded to a legal length of 16.1 inches.
• The barrel material is 4140CM SBN.
• The barrel twist is 1:7.
• The operating system is Direct Impingement.
• The muzzle device is a CMMG ZEROED SVD Brake pinned & welded.
• The muzzle thread is 5/8 x 24.
• The gas block is adjustable 0.750.
• The upper receiver is DISSENT 7075 T6 Aluminum.
• The lower receiver is Mk4 Forged 7075 T6 Aluminum.
• The handguard is a CMMG 13.5 Proprietary design.
• The charging handle is a Dissent Side Charger and is reversible.
• The package includes Magpul 300BLK 30rd PMAG (2).
• The UPC is 810144724591.

The DISSENT Mk4 brings practical modularity and forward-thinking ergonomics to an AR-style pistol platform. Its pinned-and-welded 14.5″ barrel paired with an adjustable gas block makes it versatile for both supersonic and subsonic .300 BLK loadings, and the reversible side charger and Picatinny rail end cap give mounting and handling options uncommon on similar handguns. The included Magpul PMAGs and Cerakote finish complete a durable, ready-to-configure package that fits a variety of short-barrel roles without unnecessary complexity.

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