The Faxon Harmonix Sentry .30 Cal Suppressor in Haynes 282 is a hard-use rifle can from Faxon Firearms rated for .30 caliber or less (Faxon part no. FF-SIL-R-3DPC-30-01). Faxon builds it from Haynes 282 superalloy. It weighs 15.7 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. It is aimed at shooters who run a .30 caliber rifle hard and want a can rated for full-auto heat.

Key Specifications

• The caliber rating is .30 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 15.7 ounces with no mount fitted, the price of a superalloy build.
• The material is Haynes 282 superalloy, a nickel-based alloy built for extreme heat.
• 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 lists it as full-auto rated with no semi-auto barrel length restrictions.

Frequently Asked Questions

Is the Sentry .30 Cal full-auto rated? Yes. Faxon lists it as full-auto rated, with no semi-auto barrel length restrictions.

What sound reduction does Faxon publish? Faxon reports 27.2 dB on a 9-inch 300 BLK supersonic, 26.3 dB on a 16-inch 5.56 and 24.7 dB on an 18-inch .308 Winchester, direct thread, measured 1 meter left of the muzzle.

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.

Buy the Faxon Harmonix Sentry .30 Cal Suppressor, Haynes 282

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.