M&P conversion?

Discussion in 'M&P Forum' started by lbwar15, Jul 10, 2012.

  1. lbwar15

    lbwar15 New Member

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    Can you convert an M&P .40 into .357 sig and 9mm quickly and easily like you can a glock 22 or 23?
     
  2. Gone_South

    Gone_South New Member

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    I dont know but I would like to know as well. Looking into a .40 but converting into a 9 for range savings is a nice thought.
     

  3. Gone_South

    Gone_South New Member

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    After doing some searches it appears you can. I am posting from my phone so I'm not sure how to post links. I did a general search of .40 to 9 mm & found some hits.
     
  4. lbwar15

    lbwar15 New Member

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    I should have done that to begone with.
     
  5. tbone1964

    tbone1964 New Member

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    to convert from a.40 to 9 mm you will need new mags in 9mm for reliability and a new barrel.. thats it.. if you can find a stock M&P 9mm barrel that will work as the outside diameter of the forty and nine are the same, the bore size is just different, if not a good barrel from storm lake will work as well.
     
  6. Corndork2

    Corndork2 New Member

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    YES!!!!

    I have a M&P .40 Full size. The Magazines fit .40S&W and .357SIG. I bought a barrel from S&W for 75.00. It drops directly in, and uses the same recoil spring. Two guns in one :)

    You could also look at aftermarket barrels from Storm Lake. They come in stainless, can be ported, or threaded, depending on your application.
     
  7. CFinnley

    CFinnley New Member

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    I just bought me a m&p 45. can it be converted to a 9 as easily as a .40?
     
  8. Corndork2

    Corndork2 New Member

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    I believe the .45 has a slightly larger frame than the 9mm, .40S&W, .357SIG variants. The head diameter would also be a big change in that case. I do not think it can be converted as easily... but thats not to say it totally cannot be done. The 9mm, .40S&W, .357SIG variants are easily interchangable.