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Q&A for Killer Innovations Sig P320X Magwell — 12 Questions & 12 Answers

Name Killer Innovations Sig P320X Magwell (4.3)
$79.99 $75.99 Save $4.00
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Q
Danny Frost, guest, from TX, United States, asked on February 23, 2025

This piece is for sig p-250?

Manufacturer Answer
A
Answered by Killer Innovations, Manufacturer from WA, United States, on August 06, 2025

No, this magwell is designed for the small, medium, and large XCARRY grip module only, and will not work on the P250.

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Q
Adam, member, from TX, United States, asked on November 13, 2024

why doesn't this fit the full size x series grip module?

Manufacturer Answer
A
Answered by KillerInnovations, Manufacturer from WA, United States, on November 20, 2024

Our Sig P320 magwells were designed for the small, medium, and large XCarry grip modules. This will work on the Full-Size X Series Grip Module as well as the X5 TXG.

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Q
Ron, member, from TX, United States, asked on June 14, 2022

Will this fit Sig P320 RXP X Full size grip module?

Manufacturer Answer
A
Answered by Killer Innovations, Manufacturer from WA, United States, on July 07, 2022

Hello, thank you for your question! Unfortunately it is only for the X carry grip module. - Z

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Q
sal, member, from MA, United States, asked on May 04, 2022

Will this fit a Sig P320C?

Manufacturer Answer
A
Answered by Killer Innovations, Manufacturer from WA, United States, on May 26, 2022

This will fit the sig x carry frame.

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Q
Leo, member, from WV, United States, asked on April 09, 2022

will this work with the PF320 lower from polymer 80?

Manufacturer Answer
A
Answered by Killer Innovations, Manufacturer from WA, United States, on May 26, 2022

Unfortunately not. This is only for the sig x carry frame.

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Q
Henry, member, from OH, United States, asked on February 13, 2022

Will this work on Wilson Combat X Carry grip module?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on April 27, 2022

Yes. The Killer Innovations Sig P320X Magwell is compatible with the Sig P320 small, medium and large XCARRY Grip Modules. It will not work with factory basepads and can only be used with Killer Innovations Velocity Basepad for P320 or the Velocity Mag Extension for P320.

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Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on October 28, 2021

We have not tested the two together and we are not able to confirm fitment however, the P320 Legion extended magazine does not look like it would have inference issues.

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Q
Anthony, member, from VA, United States, asked on May 09, 2021

does this work with the p320x series

Expert Answer
A
Answered by Armando R., Gear Expert, from IL, United States, on May 18, 2021

It should, but here is all of the fit information provided by Killer Innovations:

"Compatible with: small, medium and large XCARRY Grip Modules*

OUR VELOCITY SIG P320 MAGWELL CAN ONLY BE USED WITH OUR VELOCITY P320 BASEPAD OR OUR VELOCITY P320 MAGAZINE EXTENSION.

**THIS MAGWELL WILL NOT WORK WITH FACTORY BASEPADS**
*Due to some rolling changes in designs made by Sig, there is a chance that our parts may not be compatible with your specific gun, despite being noted as compatible with the variation. Please test fit parts CAREFULLY to avoid damage, in case of incompatibility. We will return or exchange undamaged parts."

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Q
Mr. V, member, from CA, United States, asked on April 16, 2021

are these compatible with the x5/legion frames?

Expert Answer
A
Answered by Armando R., Gear Expert, from IL, United States, on May 18, 2021

It is unlikely to fit as the X5/Legion frames are not compatible fitments listed by Killer Innovations.

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Q
GermanAmerican, member, from MN, United States, asked on January 28, 2021

Is this compatible with the X Compact grip module or just the X Carry?

Expert Answer
A
Answered by Armando R., Gear Expert, from IL, United States, on May 18, 2021

This is the only fit information provided by Killer Innovations for these mag wells:

"Compatible with: small, medium and large XCARRY Grip Modules*

OUR VELOCITY SIG P320 MAGWELL CAN ONLY BE USED WITH OUR VELOCITY P320 BASEPAD OR OUR VELOCITY P320 MAGAZINE EXTENSION.

**THIS MAGWELL WILL NOT WORK WITH FACTORY BASEPADS**
*Due to some rolling changes in designs made by Sig, there is a chance that our parts may not be compatible with your specific gun, despite being noted as compatible with the variation. Please test fit parts CAREFULLY to avoid damage, in case of incompatibility. We will return or exchange undamaged parts."

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Last updated 2025-11-12 UTC.