Uploaded June 2026 | Updated September 2026, 3 days ago

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In this Sound Test Hot Wash, Austin breaks down the results of our recent testing on the new M4SD-K AM vs the KAC® QDC/MCQ-PRT® and the SureFire® SOCOM556-MINI2®.

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"Knights Armament®" and "QDC/MCQ-PRT®" are federally registered trademarks of Knights Armament Co. "SureFire®" and "SOCOM556-MINI2®" are federally registered trademarks of SureFire, LLC. Griffin Armament is an independent manufacturer that is in no way affiliated with or endorsed by Knights Armament Co or SureFire, LLC. The demonstrations of the KAC® and SureFire® silencers in this video is merely used for comparison to the Griffin Armament M4SD-K™ suppressor.