The Energetic Armament Sonus is a full-size 9mm suppressor machined from 17-4 H900 stainless steel, and this SKU carries the black nitride finish (Energetic Armament part no. EA18). Thinner walls raise internal volume for better sound attenuation and help it shed heat. The end cap is removable and holds a high-temperature silicone wipe for quiet subsonic work. It accepts the common 1.375×24 HUB and Bravo quick-disconnect mounts, plus 3-lug mounts and booster assemblies, with a 1/2-28 direct thread adapter included. A suppressed 9mm pistol, subgun or pistol-caliber carbine is the natural host.

Key Specifications

• Energetic Armament rates it for 9mm NATO in full-auto fire, the main cartridge the can is built around.
• The rating also lists 300 BLK supersonic and subsonic, 8.6 BLK subsonic, .38/.357 Magnum and 350 Legend with a 10-inch minimum barrel, which widens the host list.
• Length is 6.6 inches, the extra volume that this full-size Sonus uses for sound reduction.
• Weight is 9.8 ounces on a direct thread, plus 0.4 ounce with the silicone wipe and retainer.
• Material is 17-4 H900 stainless steel, US-made and DFAR certified, for heat and fouling resistance.
• The finish is black nitride, a clean tactical look that sets this SKU apart from the MetOx Sonus.
• Mounting is 1.375×24 HUB or Bravo quick-disconnect, with a 1/2-28 direct thread adapter included.
• It is 3-lug and booster assembly compatible with HUB-pattern parts, so it moves between a pistol, subgun and carbine.
• Energetic Armament lists no barrel length restrictions under 1,000 degrees F, except on 350 Legend.
• The end cap is a removable wipe holder with a silicone wipe, which seals around the bullet for a low, even tone on subsonic rounds.

Frequently Asked Questions

Is this the black nitride or the MetOx Sonus? This listing is the black nitride finish. Energetic Armament also offers the Sonus in a MetOx burnt bronze finish.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

Does it fit a 3-lug subgun? Yes. Energetic Armament states the Sonus works with industry-standard 3-lug mounts that use the HUB pattern, and with HUB-pattern booster assemblies for pistols.

Buy the Energetic Armament Sonus 9mm Suppressor, Black Nitride, 6.6 Inch

As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through Energetic Armament‘s silencers and suppressors lineup and our Lubbock, Texas team will handle the transfer, and it ships fast to your Class 3 dealer.