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Caliber
  1. .357 SIG.357 SIG (2)
  2. .40 S&W.40 S&W (2)

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Sig Sauer

Sig Sauer P320 Compact, CALIBER X-CHANGE KIT - .357SIG

This Sig Sauer factory package converts your P320 to a Compact .357SIG. Kit comes with a black Nitron slide assembly with night sights, .357SIG caliber barrel, recoil spring, guide rod, one magazine and storage/carry case. Comes with one 13RD magazine.
$299.95

Sig Sauer

Sig Sauer P320 Compact, CALIBER X-CHANGE KIT - .40SW

This Sig Sauer factory package converts your P320 to a Compact .40S&W. Kit comes with a black Nitron slide assembly with night sights, .40 caliber barrel, recoil spring, guide rod, one magazine and storage/carry case. Comes with one 13RD magazine.
$299.95

Sig Sauer

Sig Sauer P320 Full Size, CALIBER X-CHANGE KIT - .357SIG

This Sig Sauer factory package converts your P320 to a Full Size .357SIG. Kit comes with a black Nitron slide assembly with night sights, .357 caliber barrel, recoil spring, guide rod, one magazine and storage/carry case. Comes with one 14RD magazine.
$299.95

Sig Sauer

Sig Sauer P320 Full Size, CALIBER X-CHANGE KIT - .40SW

This Sig Sauer factory package converts your P320 to a Full Size .40S&W. Kit comes with a black Nitron slide assembly with night sights, .40 caliber barrel, recoil spring, guide rod, one magazine and storage/carry case. Comes with one 14RD magazine.
$299.95

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Caliber X Change Kits

Do a super switch on the calibers in your Sig Sauer pistol with Caliber X Change Kits. These are factory conversion kits that give you the firearms flexibility to convert your classic Sig Sauer .22 pistol to another caliber. For example, easily swap out the slide assembly, barrel, recoil system, and magazine on your P220, 2-Step .22lr to a standard .45 caliber. Or you could adapt your classic P226 to a .357SIG by using the components in a Caliber X-Change Kit. You also can swap out calibers in your Sig Sauer P250 to 9mm, .40S&W, .357SIG or .45ACP. The 250 compact, full size and subcompact handguns can be converted with a factory package. Look through our caliber conversion options to broaden your training and shooting expertise. Remember, hard-to-find factory items are available here, including original kits and Sig Sauer conversion barrels.

Sig Caliber X Change for Two Trustworthy Pistols in One

Is it time for a change at the range? You’ll have no worries when performing a Sig Caliber X Change. The conversion won’t affect the reliability or accuracy of the original components or conversion assembly, and you’ll gain shooting access to two types of pistols in one unit. Fire the pistol you’re comfortable with using, while varying the performance and experience. Look for a complete factory Sig Caliber X-Change kit that includes a black slide assembly with night sights, barrel in a specified caliber, recoil spring, guide rod, magazine and hard carrying case. The slide is protected by a durable Nitron finish that helps prevent corrosion. When you order genuine Sig Sauer firearms accessories from us, they arrive with an outstanding reputation for quality equipment. And since these kits are gun parts and not classified as a firearm, they ship straight to you!