The WITT Dirty 30 is a 4-inch .30 caliber compact suppressor machined from 416 stainless steel and threaded 5/8-24 (brand part no. 30CSBLK). Witt Machine opened up its original Canooter design to .30 caliber so it could swallow larger rifle rounds while staying compact and robust. The body is 1-5/8 inches in diameter, and WITT designed it with no blowback through the charging handle. It is rated for full auto with no barrel length restriction and is designed for fixed-barrel applications. It is a short, tough can for 300 Blackout and .308 hosts.

Key Specifications

• The caliber is .30 caliber, opened up from WITT’s original Canooter design for larger rifle rounds.
• The thread is 5/8-24, the common .30 caliber muzzle thread for direct attachment.
• Overall length is 4 inches, a compact can for a .30 caliber host.
• Diameter is 1-5/8 inches, giving the blast room to expand.
• The material is 416 stainless steel, a durable steel for repeated use.
• WITT lists it as full auto rated with no barrel length restriction.
• It is designed for fixed-barrel applications, with no blowback through the charging handle.

Frequently Asked Questions

What is the Dirty 30 designed for? WITT designed it for fixed-barrel applications in .30 caliber, opening up its original Canooter design to handle larger rifle rounds.

Is there a barrel length restriction? No. WITT lists the Dirty 30 as full auto rated with no barrel length restriction.

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 WITT Dirty 30 .30 Caliber Compact Suppressor, 416 Stainless, 5/8-24

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 WITT‘s suppressors lineup and our Lubbock, Texas team will handle the transfer, and it ships fast to your Class 3 dealer. Thread it onto a 5/8-24 .30 caliber barrel and it stays out of the way at 4 inches long.