I have a 357 sig conversion barrel for my Smith and Western Sheild 40 so I have changed the barrel do I need to change the 40 cal mag to accommodate the 357 sig round

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Trevor D. · Answer

No, .40 S&W and .357 Sig use the same magazines

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I have a 357 sig conversion barrel for my Smith and Western Sheild 40 so I have changed the barrel do I need to change the 40 cal mag to accommodate the 357 sig round