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  1. Sig Sauer P320 Carry .357 Sig Caliber Exchange (X-Change) Kit, 14rd
    Sig Sauer P320 Carry Caliber Exchange Kit, .357 SIG, 14rd Learn More
  2. Sig Sauer P320 Full Size .357 Sig Caliber Exchange (X-Change) Kit, 14rd
    Convert your P320 to a full size .357 Sig. This doesn't work with .45 ACP P320's. Includes grip shell, full slide assembly with SIGLite night sights pre-installed and one 14rd magazine. Learn More

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Sig Sauer's Caliber X-Change Kits let you change the caliber of your centerfire pistol. These are specific to your exact model of pistol. You cannot use a P229 Caliber X-Change Kit on a P226 or vice versa.