Boomers Rejoice! CMMG MK3 Dissent 308

Published on January 9, 2025
Duration: 13:17

This review of the CMMG MK3 Dissent in .308 Winchester highlights its unique side-folding design, lack of buffer tube, and adjustable gas block. The firearm is noted for its robust build quality and smooth action, though its weight and stock flex at full extension are minor drawbacks. The adjustable gas block requires tuning for different ammunition and magazine types, as well as suppressor use, to ensure reliable operation and last-round bolt lock.

Quick Summary

The CMMG MK3 Dissent in .308 Winchester features a unique DISSENT system that eliminates the buffer tube, enabling a side-folding stock for increased compactness. Its adjustable gas block is essential for tuning performance with various ammunition, magazines, and suppressors, ensuring reliable cycling and last-round bolt lock.

Chapters

  1. 00:16Introduction: CMMG MK3 Dissent .308
  2. 00:58DISSENT System: No Buffer Tube
  3. 01:14First Range Impressions & Weight
  4. 01:47Adjustable Gas Block Explained
  5. 02:05Magazine Compatibility & Gas Tuning
  6. 03:00Forward Charging System
  7. 03:15Trigger Quality Assessment
  8. 03:46Ergonomics & Reloading Technique
  9. 04:14Stock Adjustability & Flex
  10. 05:09Ambidextrous Controls
  11. 05:15Safety Selector Design
  12. 05:38Internal Mechanism: DI with Dual Springs
  13. 05:50Receiver Tightness & Reliability
  14. 06:01Ammunition Tested & Performance
  15. 06:18Suppressor Use & Gas Adjustment
  16. 06:38Technical Specifications: Barrel & Rail
  17. 07:09Furniture & Accessories
  18. 07:38Machine Work & Quality Feel
  19. 08:05Disassembly & Recoil System
  20. 08:45Trigger Pull Gauge Test
  21. 10:19Trigger Shoe Design
  22. 10:41Field Stripping & Cleaning
  23. 10:57Price Point & Target Audience
  24. 11:25Outfitting the Rifle: Optics Mount
  25. 12:02Potential Modifications & Improvements
  26. 13:10Conclusion & Final Thoughts

Frequently Asked Questions

What is the CMMG MK3 Dissent's unique feature regarding its buffer system?

The CMMG MK3 Dissent utilizes a DISSENT system that eliminates the need for a traditional buffer tube. This allows for a side-folding stock configuration, making the rifle more compact when not in use, while still maintaining functionality.

How does the adjustable gas block on the CMMG MK3 Dissent impact performance?

The adjustable gas block is crucial for tuning the rifle's gas system. It allows users to compensate for different ammunition types, magazine variations, and the use of suppressors, ensuring reliable cycling and proper bolt lock on the last round.

What are the key ergonomic considerations for the CMMG MK3 Dissent in .308?

While the firearm offers ambidextrous controls and a swappable forward charging handle, users may need to adjust their thumb placement for magazine reloads due to the larger .308 magazines. The safety selector is noted as potentially thin, and the stock can exhibit flex when fully extended.

What is the trigger like on the CMMG MK3 Dissent?

The CMMG MK3 Dissent features a high-quality, drop-in style trigger with minimal take-up and a clean break. Trigger pull weights are consistently measured between 2.5 to 3.5 pounds, offering a significant upgrade over many standard factory triggers.

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