Uploaded May 2026 | Updated September 2026, 2 days ago

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In this sound/flash test comparison, Griffin compares the new GATE-LOK® M4SD-K™ AM silencer to the KAC® QDC/MCQ-PRT® and the SureFire® SOCOM556-MINI2®.

This test was conducted using the Bruel & Kjaer Pulse, lab grade sound meter and Phantom VEO 1310 High-Speed Camera System.

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Timecodes:
0:00 - Intro
0:14 - Specifications
0:54 - M4SD-K AM Flash Testing / 12.5" Griffin MK2
1:28 - MCQ-PRT Flash Testing / 12.5" Griffin MK2
2:01 - SOCOM556-MINI2 Flash Testing / 12.5" Griffin MK2
2:34 - 12.5" Griffin MK2 Unsuppressed Reference
2:56 - M4SD-K AM Sound Testing / 12.5" Griffin MK2
3:53 - MCQ-PRT Sound Testing / 12.5" Griffin MK2
4:53 - SOCOM556-MINI2 Sound Testing / 12.5" Griffin MK2
5:53 - Conclusion / Results

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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.