With these Sigarms factory barrels, you can convert your 40 S&W to 357 SIG. 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 357 Sig caliber and it fits a P229 that came from the factory in 40 S&W caliber
This conversion will work with the stock 40 S&W magazine
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