The TBAC Dominus-SR in black is a titanium .30 caliber suppressor from Thunder Beast Arms Corporation (TBAC), built for hard use and full-auto fire. It is 6.95 inches long and 1.8 inches in diameter, and it pairs an all-titanium tubeless body with TBAC’s SR quick-attach mount for secondary retention. TBAC rates it for a hard-use and full-auto firing schedule of at least 10 SOCOM/SURG cycles. It was designed to work on 5.56 gas guns, including short-barreled rifles, as well as .30 caliber battle rifles and precision bolt guns. If you want one can that handles a hard-run semi-auto and still holds precision accuracy, the Dominus-SR is built for it.

Key Specifications

• Maximum rated caliber is .30 caliber, up to .300 RUM, with minimum barrel lengths published by TBAC for each cartridge.
• Length is 6.95 inches, shorter and wider than the Ultra series.
• Weight is 12.5 ounces, light for a hard-use suppressor.
• The body is titanium with a tubeless, fully welded baffle core, built for strength at low weight.
• The mount is the SR series brake mount, a patented quick-attach and quick-detach design with secondary retention and a hard-use, full-auto rating.

Frequently Asked Questions

Will it fit my CB brake mounts? No. TBAC states the Dominus-SR fits only its SR series mounts. The Dominus-CB is the version made for CB mounts, and an SR model cannot be converted to CB.

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 TBAC Dominus-SR .30 Caliber Suppressor, Black

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 TBAC’s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer, and it ships fast to your Class 3 dealer. It is built for a rifle that gets run hard.