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Q&A for Faxon Firearms EXOS-524 Pistol Compensator for M&P Shield/Shield Plus — 8 Questions & 8 Answers

Name Faxon Firearms EXOS-524 Pistol Compensator for M&P Shield/Shield Plus (4.8)
$85.00 $79.00 Save $6.00
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Q
Daniel, member, from KY, United States, asked on December 10, 2025

Will this work on my 357 sig barrel

Manufacturer Answer
A
Answered by Faxon Firearms, Manufacturer from OH, United States, on February 19, 2026

The compensators have not been tested with .357 SIG. The bore is the correct size, but the higher pressure could erode the compensator ports with extended use. .357 SIG barrels also often have a larger outside diameter which could interfere with mounting. The thread shoulder on your barrel will need to be .575" diameter or smaller for this comp to mount correctly.

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Q
Shimonunit, guest, from CA, United States, asked on May 31, 2025

How does this work a ca comp shield plus? How is it mounted

Manufacturer Answer
A
Answered by Faxon Firearms, Manufacturer from OH, United States, on June 04, 2025

This compensator mounts to a threaded barrel. Your pistol will need a threaded barrel to mount this compensator.

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Q
Daniel, member, from OR, United States, asked on April 28, 2024

Will this work for the S&W shield 40 cal

Manufacturer Answer
A
Answered by Faxon Firearms, Manufacturer from OH, United States, on November 27, 2024

No, this compensator is not bored or threaded to work with a .40 S&W chambered pistol.

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Q
Brad Miller, member, from WI, United States, asked on January 13, 2024

This will fit 2.0 spec series correct? Thanks

Manufacturer Answer
A
Answered by Faxon Firearms, Manufacturer from OH, United States, on November 27, 2024

Yes, this will work on both 1.0 and 2.0 spec M&P Shield pistols.

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Q
Bbcppcr, member, from MD, United States, asked on December 06, 2023

Which model is recommended for the S&W FPC Carbine?

Manufacturer Answer
A
Answered by Faxon Firearms, Manufacturer from OH, United States, on November 27, 2024

We would recommend a rifle type muzzle device for the FPC. This pistol compensator will not likely mount securely or correctly to the muzzle of the FPC. Consider a device like this: https://www.opticsplanet.com/faxon-firearms-9mm-a2-flash-hiders.html

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Q
D, guest, from FL, United States, asked on May 07, 2023

Will these work will the M&P shield plus factory springs or do you have to replace it?

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on May 15, 2023

The Faxon Firearms EXOS-524 Pistol Compensator for M&P Shield/Shield Plus will work with factory springs. You will need a 1/2x28 threaded barrel for the Shield Plus and Faxon recommends using their barrel.

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Q
Charles, member, from MO, United States, asked on December 09, 2022

does this work with other pistol brands (non Smith and Wesson) threaded barrels?

Manufacturer Answer
A
Answered by Faxon Firearms, Manufacturer from OH, United States, on January 11, 2023

These compensators are designed for and tested on S&W Shield 9mm pistols. Function or performance on other models of pistol have not been tested and we do not recommend attempting to use them on pistols other than those they were designed for. We do produce other models of compensators for other brands/models of pistols including many models from SIG and Glock.

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Q
Jay, member, from TN, United States, asked on August 29, 2022

Does this work with the factory barrel? Or do you need a threaded barrel ?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on September 07, 2022

The Faxon Firearms EXOS-524 Pistol Compensator requires a 1/2x28 threaded barrel in order to properly install to your firearm.

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