With these Sigarms factory barrels, you can convert your 357 SIG to 40 S&W. These barrels are made of blue chrome moly steel. If converting the P239, a new magazine will be required (sold separately). Other models require no magazine change.
Features: Allows conversion from one caliber to another
Gunsmithing Required: No
This barrel is 40 S&W caliber and it fits a P226 that came from the factory in 357 Sig caliber
This conversion will work with the stock 357 Sig magazine
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