Simple, Easy, and Quiet!

The SMPX silencer is a modification to the factory barrel. It features a one piece billet core that is machined from 17-4ph stainless steel and is user serviceable. The silencer is completely removable for easy cleaning. A tool is included for disassembly, however, you can also use any standard 3/8 drive wrench. There is no need to buy subsonic ammo to be stealth quiet, our unique design gives you subsonic velocities with high velocity ammunition.


More Information


Model: SMPX
Caliber: 9MM
Material: Aluminum Body/ Stainless Steel Core
Length:  Barrel 6″ / Silencer Length 12″
Finish: Type 3 Hard Coat Anodized/ Laser Engraved

MSRP: $2,325 – $2,945

Pricing varies depending on firearm model.

The silencer is removable for easy cleaning. For those wishing to submit form 1 paperwork, the barrel length should be listed as 6″.

Customer Reviews

To leave your review below, you must be an actual owner of this product, or a verified Innovative Arms Dealer. For verification purposes, the serial number, and/or product registration are required to be able to submit a review. 

Write Your Review

Average rating:  
 3 reviews
by Chris Parker on Sig MPX Integral

Great sound, well made and easy to take apart and clean. It's a winner.

by AJ Baker on Sig MPX Integral
Location: FL

I am very happy with the integral modification that Innovative Arms did on my MPX barrel. It's quiet, easy to maintenance and looks great.  They were very customer oriented and knowledgeable.

by Mark D. on Sig MPX Integral

I recommend these guys. My dealer sent my barrel in and they had the integral done and shipped to the store in two weeks. It's still in jail but I get to visit it regularly. It's super quiet and runs all the ammo types I've ran through it. Can't wait to take her home.


Replacement tools, boresnakes specific for integrals, and our telescoping MPX stock are available in our webstore.

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