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Sig Sauer P320 Compact 9mm Caliber Exchange (X-Change) Kit, 15rd

Convert your P320 to a compact 9mm. This doesn't work with .45 ACP P320's. Includes grip shell, full slide assembly with SIGLite night sights pre-installed and one 15rd magazine.

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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.

The Caliber X-Change Kit allows you to convert any P320 chambered in 9mm, .40 S&W, or .357 Sig to a compact size 9mm. It is not compatible with .45 ACP P320's.
Specs - More Info
Additional Info
UPC Code 798681511471
Caliber 9mm
Manufacturer Sig Sauer
Overall Height 5.3 in
Sights (detailed) SIGLITE night sights
Sight Radius 5.8 in
Weight Empty 26oz
Grips Polymer one piece grip shell
Barrel Length (in) 3.9 in
Mag Capacity / Rounds 15rd
Number of Mags 1
Accessory Rail Yes
Warranty Warranty provided by Sig Sauer. Warranty information is available for Sig Sauer products at
Customer Reviews (1)
Sig p320
Product is amazing, service at Osage Guns was fast and received product in 3 days. Review by Lonnie (Posted on 8/11/2019)
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Product Questions

Product Questions

Considering converting my Sig P320 full size RX to a carry gun, could you tell me what i need to make this happen? Thanks

Referenced product: CALX-320C-9-BSS

If you want to convert the full size RX to a Carry and use your Romeo1 on the Compact, there isn't an out of the box solution. The Caliber X-Change kit includes everything needed to convert the P320 but the slide isn't cut for a Romeo1. Sig does offer P320 RX Caliber X-Change kits with the Romeo1 installed. If you are not wanting to use the Romeo1 on the Compact configuration, the regular CALX-320C-9-BSS contains all you need to convert (includes slide, barrel, recoil spring, grip module, and compact magazine). 

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Is this an upgraded kit that works with upgraded FCU?

Referenced product: CALX-320C-9-BSS

This is an upgraded kit and is compatible with the new FCU.

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Is this exchange kit compatible with the p250 FCU?

Referenced product: CALX-320C-9-BSS

Unfortunately P250 fire control units are not compatible with P320 Caliber X-Change Kits.

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