Uploaded May 2026 | Updated September 2026, 1 day ago

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In this sound/flash test comparison, Griffin compares the new GATE-LOK® M4SD-3™ AM silencer to the KAC® NT4-PRG® and the SilencerCo® Velos LBP®.

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-3 AM Flash Testing / 12.5" Griffin MK2
1:28 - NT4-PRG Flash Testing / 12.5" Griffin MK2
2:01 - Velos LBP Flash Testing / 12.5" Griffin MK2
2:34 - 12.5" Griffin MK2 Unsuppressed Reference
2:56 - M4SD-3 AM Sound Testing / 12.5" Griffin MK2
3:53 - NT4-PRG Sound Testing / 12.5" Griffin MK2
4:51 - Velos LBP Sound Testing / 12.5" Griffin MK2
5:53 - Conclusion / Results

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"Knights Armament®" and "NT4-PRG®" are federally registered trademarks of Knights Armament Co. "SilencerCo®" and "Velos LBP®" are federally registered trademarks of SilencerCo, LLC. Griffin Armament is an independent manufacturer that is in no way affiliated with or endorsed by Knights Armament Co or SilencerCo, LLC. The demonstrations of the KAC® and SilencerCo® silencers in this video is merely used for comparison to the Griffin Armament M4SD-3™ suppressor.