CMMG Dissent MK4 300 Blackout 10.5" Midnight Bronze

The CMMG Dissent MK4: Compact Power in 300 Blackout

The 300 Blackout cartridge was designed to deliver rifle-class performance from short barrels, and this CMMG Dissent MK4 proves the concept works beautifully. With a 10.5" barrel, you get full ballistic capability from virtually any 300 Blackout loading—supersonic or subsonic—without sacrificing portability.

What Sets It Apart

Innovative Design

• Eliminates the buffer system found on conventional AR15 platforms, creating a truly compact package
• 1913 Picatinny rail end plate allows you to attach a folding pistol brace or stock of your choice
• Midnight Bronze Cerakote finish provides durability and aesthetic appeal

Optimized for 300 Blackout

• Adjustable gas block lets you fine-tune the system for your preferred ammunition
• Dial in performance for supersonic loads or optimize for subsonic ammunition
• Ideal for suppressed shooting applications

Trigger Performance

• ZEROED single-stage trigger with 4.5 lb pull weight
• Crisp, predictable break suitable for both defensive work and precision shooting
• Equally at home in a compact personal defense role or extended-range applications

The Right Tool for the Job

The 300 Blackout's versatility makes it one of the most adaptable cartridges available. This Dissent MK4 harnesses that adaptability in a platform that's genuinely portable without compromise. Whether you're building a suppressed home defense weapon or a specialized precision rifle, the adjustable gas system and quality trigger give you the tools to optimize performance for your specific needs.