Thread: Test-9mm factory barrel in M&P 40-
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Old 01-07-2011, 05:32 PM
Roadranger Roadranger is offline
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Wink
I know from experience that a 357Sig barrel will work straight away in a 40 or visa-versa. I'm pretty sure a 9mm barrel will work in a 357 M&P with the 9mm Magazine and possibly a 9mm recoil spring. Bob
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