Simple, Easy, and Quiet!

The SMPX silencer is specifically designed for the Sig MPX. It features a one-piece billet core made of 17-4ph stainless steel, which can be easily disassembled for cleaning. You can use a standard 3/8 drive wrench or the tool that comes with the silencer for disassembly. Our unique design eliminates the need for subsonic ammunition to achieve a stealthy, quiet performance. You can use high-velocity ammunition and still achieve subsonic results. Click the tabs below for more information and client reviews.  



This is an integral suppressor modification to the factory MPX barrel you provided. When sending us your barrel, it needs to be at least 6″ long. ONE PIECE CORE—USER SERVICEABLE—TOOL INCLUDED The silencer is removable for easy cleaning. For those wishing to submit form 1 paperwork for an SBR, the barrel length should be listed as 6″. 

Model: SMPX
Caliber: 9MM
Material: Aluminum Body/ Stainless Steel Core
Length:  Barrel and Silencer 12″  (Tube ID: 1.370″)
Finish: Type 3 Hard Coat Anodized




At the range with PewCulture video by PewCulture


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. 

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Sig MPX Integral
Average rating:  
 5 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

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.