This slideshow requires JavaScript.

Simple, Easy, and Quiet!

The SMPX silencer is a modification to the factory pistol 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. Firearm model ,color, and furniture may vary. Specify with your dealer before ordering. Click the tabs below for more information,including pricing, customer reviews and how to order.


How To Order

To order, contact your local Innovative Arms dealer or give us a call at 803-408-9955.

Don’t have a dealer in your area? Use our dealer locator to find a dealer near you.


More Information and Pricing


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

MSRP: $2960- $3560

For those that already own an MPX pistol the MSRP is $1,542 for the integral/barrel kit. Includes the integral suppressor and barrel.

Total price for the complete integral firearm package varies by firearm model. 

The silencer is removable for easy cleaning. For those wishing to submit form 1 paperwork for a SBR, 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

Sig MPX Integral
Average rating:  
 4 reviews
 by Rob T.

 Super quiet, well build and easy to clean. They had great communication and they did the work in just 2 days. I will do business with them again and recommend their company to others.

 by Chris Parker

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

 by AJ Baker
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.

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.

Shop the Store

This slideshow requires JavaScript.