CMMG 30B0E67AB Dissent MK4 300 Blackout 6.50", Left Side Charging Handle, Armor Black, Zeroed Linear Comp, 4.60" M-LOK Handguard, Picatinny End Plate, Fits AR-Platform

The CMMG 30B0E67AB Dissent MK4 300 Blackout rifle delivers a compact, ambidextrous platform purpose-built for versatility in confined spaces and tactical operations. Chambered in 300 Blackout, this AR-platform carbine pairs a 6.50-inch barrel with a left-side charging handle, enabling rapid administrative functions and reload management without requiring shooters to break primary grip. The Armor Black finish provides a matte, low-visibility aesthetic while resisting light corrosion in varied environments.

Mechanically, the Dissent MK4 features a zeroed linear compensator that addresses muzzle rise without the report redirection of a traditional muzzle brake—a critical advantage in training environments, enclosed spaces, or duty scenarios where shooter comfort matters. The 4.60-inch M-LOK handguard provides modern accessory mounting flexibility while maintaining a compact overall profile, and the Picatinny end plate ensures compatibility with standard rail-mounted systems. At 4.2 lbs, the rifle remains point-able in dynamic shooting sequences without excessive fatigue during extended training or patrol cycles.

This configuration appeals to operators, competitive shooters, and serious enthusiasts prioritizing maneuverability and ambidextrous ergonomics. The 300 Blackout cartridge excels in subsonic and supersonic loads, making the platform adaptable to suppressed and unsuppressed fire. The left-side charging handle is particularly valuable for those transitioning between platforms or requiring non-dominant-hand operation during close-quarters scenarios or medical response drills.

CMMG Dissent MK4 models have established themselves in both civilian tactical training and professional duty contexts, where compact, ambi-friendly AR variants command consistent demand. The 300 Blackout cartridge continues to grow in popularity for both range work and defensive applications where intermediate ballistics and platform availability are priorities. The Dissent MK4 represents CMMG's commitment to refined ergonomics and practical feature integration for the modern AR-15 platform.