Uploaded February 2026 | Updated September 2026, 4 hours ago

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In this sound/flash test comparison, Griffin puts the new DUAL-LOK HRT-556 AM silencer up against the CAT White Bread and AAC Ranger 5 RBP. This test was conducted using the Bruel & Kjaer Pulse, lab grade sound meter.

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Timecodes:
0:00 - Intro
0:14 - Specifications
0:54 - HRT-556 AM Flash Testing / 12.5" MK2
1:21 - Ranger 5 RBP Flash Testing / 12.5" MK2
1:55 - CAT White Bread Flash Testing / 12.5" MK2
2:30 - Unsuppressed 12.5" MK2 Reference
2:53 - HRT-556 AM Sound Testing / 12.5" MK2
3:47 - Ranger 5 RBP Sound Testing / 12.5" MK2
4:46 - CAT White Bread Sound Testing / 12.5" MK2
5:40 - Conclusion / Results

Check out the new DUAL-LOK® HRT-556™ AM on the Griffin Armament website, available soon!

"CAT®" and "White Bread (WB)®" are federally registered trademarks of The Specter Factory LLC and is of many trademarks owned by The Specter Factory LLC. "AAC®" and "Ranger 5 RBP®" are registered trademarks of Advanced Armament Corporation. Griffin Armament is an independent manufacturer that is in no way affiliated with or endorsed by The Specter Factory LLC or Advanced Armament Corporation. The demonstration of the CAT®, White Bread®, AAC®, and Ranger 5 RBP® are merely used for comparisons of the Griffin Armament HRT-556™ AM Silencer.

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