M&P 40 to 9mm conversion barrels really needed?

bobbarker

Well-Known Fanatic
Joined
Jan 21, 2011
Messages
62
Location
Edmond, OK
Looks like you can just drop in a 9mm S&W factory barrel and with 9mm mags have basically factory function.
Info in link
People are saying that the only differences in the exploded diagrams of the two caliber handgun are the slide and barrel n

What does our resident M&P pistol smith think?
 

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