The Maxim Defense MS-9 (brand part no. 48217) is a 9mm modular suppressor built for shooters who need or want configurability in their pistol caliber platforms. Maxim Defense Industries designed the MS-9 to run short or long depending on the application, working equally well on pistols or pistol caliber carbines with no barrel-length restriction. The MS-9 favors 9mm PCC and pistol shooters who want a configurable, modular can.

Key Specifications

• Chambered for 9mm ammunition.
• Configurable in short or long setups depending on application.
• Compatible with both pistols and pistol caliber carbines.
• Mounts via a direct-thread 1/2×28 piston.
• Built from 17-4 stainless steel and 7075-T6 aluminum.
• Configures short (5.375 inches, 8.7 ounces) or long (7.5 inches, 10.5 ounces), and ships with a 1/2×28 piston mount.

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.

How does it mount? It uses a direct-thread 1/2×28 piston mount for pistols and PCCs, with no separate quick-detach hardware involved.

Buy the Maxim Defense MS-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 and an extended federal approval wait before delivery. Order through Maxim Defense Industries‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.