CMMG 9mm GUARD

Published on December 8, 2017
Duration: 27:36

The CMMG Guard 9mm PCC utilizes a unique Radially Delayed Blowback system for reduced recoil, making it exceptionally hearing-safe when suppressed. While featuring AR-15 compatibility and Glock magazine support with a last-round bolt hold-open, users should be aware of potential feeding issues with specific ammunition and the need for adapters due to its 1/2x36 barrel threading. The inclusion of an action tuning kit allows for optimization with different ammo types.

Quick Summary

The CMMG Guard 9mm PCC utilizes a unique 'Radially Delayed Blowback' system, allowing for a lighter bolt and reduced recoil, making it exceptionally hearing-safe when suppressed. It supports Glock magazines and features a last-round bolt hold-open, though ammunition-specific reliability testing is recommended.

Chapters

  1. 00:00Intro & First Shots
  2. 00:51Radially Delayed Blowback System Explained
  3. 02:31Sound Metering & Suppressor Performance
  4. 03:07Pistol Configuration & Glock Mags
  5. 04:07Barrel Length & Thread Pitch (1/2x36)
  6. 04:59Pricing & Premium Components
  7. 06:49Magazine Compatibility & Reliability Issues
  8. 08:53Action Tuning Kit Explained
  9. 13:31Final Assessment & Recommendations

Frequently Asked Questions

What makes the CMMG Guard's operating system unique?

The CMMG Guard uses a 'Radially Delayed Blowback' system. Unlike standard blowback, it features a bolt with lugs that rotate outwards from the barrel extension, allowing for a lighter bolt and reduced recoil, making it very suppressor-friendly.

How does the CMMG Guard perform with a suppressor?

The Guard is exceptionally hearing-safe when suppressed, with sound metering consistently staying below the 140dB OSHA threshold. This makes it an excellent platform for suppressed shooting.

What are the key features of the CMMG Guard's lower receiver?

The lower receiver is dedicated to Glock magazines, offering wide compatibility. It also includes a last-round bolt hold-open feature, enhancing its usability and ergonomics similar to an AR-15.

Does the CMMG Guard have any known reliability issues?

Reliability can be ammunition-dependent. Some feeding issues were noted with specific steel-cased ammunition like Winchester USA Forged. Testing defensive loads is crucial for ensuring consistent function.

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