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Sig Sauer P320 Fullsize .40 S&W Caliber Exchange (X-Change) Kit

Sig Sauer P320 Fullsize .40 S&W Caliber Exchange Kit - 14rd

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Availability: Out of stock


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.

Sig P320 Medium Grip Shell Circumference
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.
Specs - More Info
Additional Info
UPC Code 798681511501
Caliber .40 S&W
Manufacturer Sig Sauer
Mag Capacity / Rounds 14rd
Accessory Rail Not Applicable
Warranty Warranty provided by Sig Sauer. Warranty information is available for Sig Sauer products at
Customer Reviews (1)
Wrong sights installed
Good price from Osage on this kit. Order processing and shipping were very satisfying.
In a matter of minutes my P320c 9mm was a P320 full size .40SW. I had to push the FCU quite a bit to get it in the frame but I assume this will be easier after breaking in.
The negative; I was shooting it and all my groups were low.
My research found that .40 should have #6 front and #8 rear sights but I received a slide with front and rear #6 installed.
Guess I have to use my saving from Osage’s better price to buy me a #8 rear sight.
Review by BaBa (Posted on 8/30/2019)
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Product Questions

Product Questions

Will this grip module work with the full size p320 slide or only with the X5 slide?

Referenced product: GRIP-X5-F-943-M-BLK

The P320 X5 Grip Module will work with a regular P320 Full Size slide in 9mm, .40 S&W and .357 Sig. It should also work for P250 full size models.

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