The Sig Sauer MODX-9 (brand part no. MODX9) is a 9mm direct-thread suppressor measuring 7.5 inches long, compatible with 7.5-inch barrels. Sig Sauer threads the MODX-9’s mount to accept both 1/2-28 and M13.5x1mm LH patterns, covering a wide range of 9mm host firearms. The MODX-9 favors 9mm shooters who want a Sig-built direct-thread can with dual thread-pattern compatibility.

Key Specifications

• Chambered for 9mm ammunition.
• Measures 7.5 inches long.
• Compatible with barrels around 7.5 inches long.
• Threaded to accept both 1/2-28 and M13.5x1mm LH patterns.
• Built from titanium with fully modular, reconfigurable baffles.
• Weighs about 8 ounces and measures 7.5 inches in the full configuration.

Frequently Asked Questions

Is this an NFA item? Yes. As a suppressor, it's a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

What caliber is it rated for? 9mm.

What thread patterns does it accept? Both 1/2-28 and M13.5x1mm LH.

Buy the Sig Sauer MODX-9 Suppressor

This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4 and transfer through a licensed NFA (SOT/Class 3) dealer, with no federal transfer tax; ATF approval on most individual eForm 4 filings now comes back in days, and trusts take a little longer. Order through Sig Sauer‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.