The Faxon Harmonix ION .36 Cal Suppressor in Titanium is a lightweight rifle can from Faxon Firearms rated for .36 caliber or less (Faxon part no. FF-SIL-R-3DPC-36-02). Faxon builds it from Grade 5 titanium. It weighs 8.4 ounces without a mount, measures 6.75 inches long and carries a high-temperature ceramic coating. The body is HUB mount compatible, and Faxon packs a 5/8×24 direct thread HUB adapter in the box. The larger bore rating opens it to 338 ARC, 8.6 BLK and 9mm PCC hosts alongside 5.56, 300 BLK and .308 Winchester.

Key Specifications

• The caliber rating is .36 caliber or less, as Faxon lists it for this model.
• Length is 6.75 inches, the same compact body across the Harmonix line.
• Weight is 8.4 ounces with no mount fitted, light for a centerfire rifle can.
• The material is Grade 5 titanium, chosen for strength at low weight.
• The finish is a high-temperature ceramic coating for heat and wear resistance.
• Maximum body diameter is 1.675 inches, with 1.5-inch wrench flats for installation.
• Faxon gives it an 800-degree Fahrenheit thermal limit: short bursts are fine, but it is not for sustained full-auto fire.

Frequently Asked Questions

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.

What sound reduction does Faxon publish for the ION .36 Cal? Faxon reports 25.8 dB on a 10.5-inch 9mm PCC with no booster, 25.2 dB on a 12.5-inch 338 ARC subsonic and 23.6 dB on a 16-inch 5.56, all direct thread, measured 1 meter left of the muzzle against a bare muzzle.

Can it handle full-auto fire? Faxon gives the ION an 800-degree Fahrenheit thermal limit: short bursts are fine, but not sustained full-auto fire.

Buy the Faxon Harmonix ION .36 Cal Suppressor, Titanium

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 Faxon Firearms‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer.