This review of the CMMG Guard 9mm, presented by Garand Thumb, highlights its unique Radial Delayed Blowback system, offering significantly reduced recoil compared to traditional blowback systems and even the H&K MP5. The firearm is compatible with Glock magazines and features a last-round bolt hold open. While praised for its controllability and suitability for home defense, potential buyers should be aware of its higher price point and a critical limitation: inconsistent feeding with certain hollow-point ammunition, necessitating careful selection of defensive rounds.
This guide details how to tune the CMMG Guard 9mm pistol using its proprietary Action Tuning Kit. The Radially Delayed Blowback system requires specific weight adjustments in the bolt carrier group to optimize reliability with different ammunition types, from subsonic to +P loads. Proper tuning, combined with compatible magazines and ammunition selection, is crucial for consistent performance, especially when suppressed. The review highlights the importance of testing defensive ammunition for function.
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