Faxon HARMONIX® Suppressor Performance at Thunderbeast® Silencer Summit 2025

The 2025 Silencer Summit, hosted by Thunderbeast Arms Company (TBAC) from August 18-22 in Cheyenne, Wyoming, was a pivotal event for suppressor enthusiasts. In its third year, the Summit brought together over two dozen manufacturers to test silencers under standardized conditions using advanced B&K PULSE equipment. The result is a transparent dataset, offering shooters and professionals clear insights into sound suppression performance.

Faxon Firearms, known for precision barrels and innovative components, showcased their Harmonix® suppressor line, competed alongside industry leaders like Dead Air, Knight’s Armament, and TBAC, with their new Harmonix® suppressors.

Testing Methodology

The Summit tested over 375 gun/suppressor combinations on standardized hosts: a .22LR pistol (Sig P322), a 9mm pistol (Sig P320-M18), a 5.56 AR-15 (Daniel Defense 16"), a .300 Blackout bolt-action, and a .300 Win Mag bolt-action. Metrics included peak pressure, impulse, and Leq(10ms) dBA, with Mil dBA AVG as the primary measure of muzzle suppression. Indoor tests at TBAC’s facility were validated against outdoor baselines to ensure accuracy, and waveforms were archived for transparency.

Faxon Firearms’ Harmonix® Line: Key Takeaways

Faxon Firearms’ Harmonix® suppressors delivered consistent performance at the 2025 Silencer Summit, with standout results in 5.56 and strong showings in 9mm and .30 caliber categories. The Harmonix® 5.56 ranks among the quietest, ideal for AR-15 users. The Harmonix® .36 and Harmonix® .30 offer versatile multi-caliber performance, excelling in .300 Blackout and holding steady on 9mm and .300 Win Mag. The Twenty-Toucan® provides solid rimfire suppression.

Strengths:

• Elite 5.56 Suppression: Harmonix® 5.56’s 134.7 dBA places it in the top five, with a compact 7" profile.
• Multi-Caliber Versatility: Harmonix® Sentry .36 and Harmonix® Sentry .30 handle 9mm, .300BO, and .300WM effectively, with strong SE (shooters ear) dBA (e.g., 124.11 on .300BO).
• Robust Design: At 16.9 oz across models, Faxon prioritizes durability without excessive length.
• Shooter Comfort: Low SE dBA across categories enhances user experience.

Conclusion

Faxon Firearms’ Harmonix® line, including the Harmonix® Sentry .36, Harmonix® Sentry 5.56, Harmonix® Sentry .30, and Twenty-Toucan®, marks a strong entry into the suppressor market. Their 5.56 performance is near-elite, and their multi-caliber designs offer practical versatility for 9mm and .30 caliber applications. For shooters seeking reliable, robust suppressors, Faxon is a compelling choice. Explore the full TBAC Summit data below for detailed metrics and graphs. What’s your take on Faxon’s performance? Considering a Harmonix® or Twenty-Toucan® suppressor for your next build?

Check out the full 2025 Silencer Summit Sound Test Results from Thunder Beast Arms Corporation:

This report includes detailed test data on over 375 silencer combinations, experimental setups, and results tables.