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Sig Sauer P320 Sub Compact 9mm Caliber Exchange (X-Change) Kit


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Sig Sauer P320 Sub-Compact 9mm Caliber Exchange Kit - 12rd


Note that Sig Sauer recently made an inline design change to the grip shells and slide catch levers. Watch our video below for additional information. We cannot guarantee that you will receive one or the other due to Sig using the same part numbers for the old and new style grip shells, Caliber X-Change Kits, and P250 / P320 firearms.

P320® Caliber X-Change™ Kit The modular P320 allows you to select any of several centerfire calibers. Just disassemble the pistol and reassemble it with the X-Change Kit’s barrel/slide assembly, grip module, and magazine. This kit will only work on pistols that shipped from the factory in 9mm, .40 S&W, and .357 SIG configuations.

Additional Information

UPC Code 798681543175
Caliber 9mm
Manufacturer Sig Sauer
Trigger Pull SA No
Trigger Pull (DA) No
Overall Length No
Overall Height No
Overall Width No
Sights (detailed) SIGLITEĀ® Night Sights
Sight Radius No
Weight Empty No
Grips No
Frame Finish Black
Frame Material No
Slide Finish Black
Stock Material No
Barrel Length (in) 3.6 in
Rifling No
Number of Grooves No
Mag Capacity / Rounds 12rd
Number of Mags 1
Sound Reduction No
Accessory Rail No
Features No
Safety (detailed) No
Competition Approval No
Magazine Well No
Additional Info No
Bullet Type No
FFL Requirements All firearms must be shipped to a Federal Firearms License (FFL) holder. We cannot and will not ship firearms to anyone but a FFL. We must receive the receiving dealer's FFL by fax (314-558-8429) or email ([email protected]).
Warranty Warranty provided by Sig Sauer. Warranty information is available for Sig Sauer products at

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Product Questions

1) Does this kit include a 12rd mag. NJ limits capacity to 10rd , unless LE. 2) I would like to get grip module in FDE ,is that possible?

Referenced product: WCALX-320SC-9-BSS

The referenced kit does have a 12rd magazine but Sig offers a 10rd version of that kit: CALX-320SC-9-BSS-10

Unfortunately it is only available with the black grip module.

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Customer Reviews

  • Legos for Gun owners!
    Review by Richardon 2/2/2020
    First Osage County Guns is awesome! They shipped this out and into my hands in three days!
    I bought the Sub Compact conversion kit so I could throw on the X-Compact grip and make my own X-Compact pistol. Only thing missing is the removable plate to mount an optic. Which is ok since I have no desire to mount an optic. Looks and feels amazing!
  • Awesome value!
    Review by Ericon 1/27/2020
    Great X Change kit at an awesome price. I already have a carry-sized P320 .40/.357 Sig, but I wanted something a bit smaller for hotter weather/lighter clothes, so I went with this sub-compact 9mm kit. Shoots and conceals great! I would highly recommend it.