Sig Sauer MODX-9 Suppressor for MPX, Modular Titanium

The Sig Sauer MODX-9 (brand part no. MODX-9-MPX) is a pistol suppressor built for the MPX platform with fully modular, configurable titanium baffles. Sig Sauer lets shooters personalize the MODX-9 for overall length, weight, and sound by disassembling and reconfiguring it with fewer baffles when a shorter, lighter build is the priority. The MODX-9 favors MPX shooters who want a tunable, class-leading suppressor.

Key Specifications

• Built for the MPX platform.
• Features modular titanium baffles for a personalized build.
• Can be reconfigured with fewer baffles to prioritize length and weight over maximum sound reduction.
• Mounts via direct thread, using a caliber-specific piston.

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 platform is it built for? The Sig Sauer MPX.

How does it mount? It mounts via direct thread, using a caliber-specific piston (e.g. M13.5x1LH for the MPX), not a quick-detach mount.

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, no federal transfer tax, and transfer through a licensed NFA (SOT/Class 3) dealer, with an extended federal approval wait before delivery. Order through Sig Sauer‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.