When mission parameters demand a compact, hard-hitting platform for close-quarters work, choices that balance controllability, modularity, and raw terminal performance rise to the top. The right compact pistol can be a decisive tool for entry teams, range professionals, and responsible armed citizens focused on defense-ready solutions.

CMMG DISSENT MK4 The DISSENT Mk4 brings CMMG’s patent-pending Compact Action system to a .300 BLK braced pistol platform, integrating the recoil system into the upper receiver to eliminate the buffer tube and deliver an ultra-compact footprint while retaining reliable function. Shop this product

Design and Compact Action

The Compact Action is the standout technical feature: by consolidating the entire recoil system inside the upper receiver, the DISSENT Mk4 avoids the traditional rearward extension and opens options for braced setups. That design makes the 6.5″ barrel platform exceptionally maneuverable without sacrificing mechanical robustness. The rear 1913 Picatinny rail on the lower lets operators fit a brace or compatible stock per mission needs.

Materials and Finish

Both upper and lower receivers are machined from 7075 T6 aluminum for high strength-to-weight ratio and finished in durable Cerakote, prepared to withstand environmental and operational abuse. CMMG ZEROED components — linear compensator, pistol grip, trigger, and safety selector — are specified to work together for consistent feel and durability.

Caliber, Barrel, and Tunability

The .300 BLK chambering provides a potent .30-caliber “punch” from the short 6.5″ barrel, making it effective with both supersonic loads for barrier performance and subsonic loads for suppressed use. The adjustable gas block is essential on a short-barrel .300 BLK, allowing fine-tuning to match ammunition type and mitigate recoil impulse for faster follow-up shots and reduced wear on the action.

With a 30+1 capacity and forward non-reciprocating side charger plus AR15 ambidextrous controls, the DISSENT Mk4 is configured for fast, intuitive manipulation by both left- and right-handed operators. For operators prioritizing low-profile firepower and rapid deployment, this package is compelling. View product details and pricing

At a price of $1846.99, the CMMG DISSENT MK4 is positioned as a premium compact braced pistol that prioritizes engineering innovation and battlefield-proven materials. For evaluators seeking a compact .300 BLK option with adjustable gas, ambidextrous controls, and proven construction, this platform merits hands-on testing. Check current availability

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