The CMMG Dissent MK47 is a .300 AAC Blackout semi-automatic rifle built around the Dissent platform's side-folding stock. At 6.40 lbs it's lighter than most full-featured .300 BLK builds, and the folding stock makes it substantially more packable than a collapsible-tube AR. 
 

Key Specifications 

• Caliber: .300 AAC Blackout 
• Barrel Length: 16.1 inches 
• Capacity: 30+1 rounds 
• Weight: 6.40 lbs 
• Overall Length: Adjustable from 27.60 to 37 inches 
• Trigger: Zeroed Drop-In Single Stage 
• Safety Mechanism: CMMG Zeroed 60/90 Degree Safety Selector 
• Stock Type: CMMG Dissent Side Folding Stock 
• Muzzle Device: CMMG Zeroed Muzzle Brake 
• Receiver Material: Aluminum 
• Twist Rate: 1:7" 
   

Detailed Features 

 
The aluminum receiver keeps weight down without sacrificing structural integrity. The Zeroed drop-in single-stage trigger has a clean pull — meaningfully better than a standard mil-spec trigger and no gunsmithing required to install. The 60/90 degree safety selector is ambidextrous and lets the shooter choose their preferred throw angle. 
 
The Zeroed muzzle brake reduces felt recoil and muzzle rise, which translates to faster follow-up shots. The 1:7" twist rate handles both subsonic and supersonic .300 BLK loads, which matters if suppressor use is part of the plan. The folding stock gets OAL down to 27.60" — a real storage and transport advantage. 
 

Usage Scenarios 

• .300 BLK is purpose-built for suppressed use, and this rifle's 16.1" barrel with 1:7" twist runs both subsonic and supersonic loads effectively. 
• The folding stock and compact folded length make it practical for vehicle storage or pack carry. 
• Hunters targeting medium game benefit from .300 BLK's terminal performance at close to moderate ranges. 
• Home defense users get a 30+1 capacity with the folding stock's deployment speed advantage in confined spaces.

The Dissent MK47 in .300 BLK draws consistent positive feedback on the folding stock design — that's the feature users mention most. The ability to fold it down for transport while maintaining a full-size shooting envelope when deployed is a practical advantage that resonates with users who store rifles in vehicles or small spaces.

The .300 BLK caliber gets praise specifically from suppressor owners, who appreciate the cartridge's subsonic performance and how well it pairs with cans. Accuracy and reliability get good marks overall, and CMMG's build quality shows up as a baseline expectation that the Dissent meets.

Price is the most cited criticism. The Dissent platform carries a premium over conventional AR builds, and some buyers question whether the folding stock and Zeroed components justify the gap. Weight when loaded with accessories comes up — at 6.40 lbs bare the rifle is light, but add a suppressor, optic, and forend light and it grows noticeably. Customization discussions in the community are active, with users sharing optics, grip, and forend choices that pair well with the platform.