M&P Caliber Conversion??

M&P Caliber Conversion??

This is a discussion on M&P Caliber Conversion?? within the Defensive Carry Guns forums, part of the Defensive Carry Discussions category; I just discovered that Storm Lake makes a .40 to 9mm (FS or compact) conversion... and it only requires a barrel & mag change. Has ...

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Thread: M&P Caliber Conversion??

  1. #1
    Member Array OperatorJ's Avatar
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    M&P Caliber Conversion??

    I just discovered that Storm Lake makes a .40 to 9mm (FS or compact) conversion... and it only requires a barrel & mag change. Has anyone done this? And if you have a 9c, could you go up to a .40?

    Part 2... if everything in the guns is the same / similar enough... could I just put a 40c slide on my 9c frame & change the mags?

    J


  2. #2
    Senior Member Array MotorCityGun's Avatar
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    There's a ton of M&P info at this forum. Smith & Wesson M&P Pistols

    Just go to the search tab in the upper right hand.

    BTW, 40 to 9 is doable. 9 to 40, NOT.

  3. #3
    Member Array OperatorJ's Avatar
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    Quote Originally Posted by MotorCityGun View Post
    There's a ton of M&P info at this forum. Smith & Wesson M&P Pistols

    Just go to the search tab in the upper right hand.

    BTW, 40 to 9 is doable. 9 to 40, NOT.
    Thanks for the resource!

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    Member Array seawolf1956's Avatar
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    Quote Originally Posted by MotorCityGun View Post
    There's a ton of M&P info at this forum. Smith & Wesson M&P Pistols

    Just go to the search tab in the upper right hand.

    BTW, 40 to 9 is doable. 9 to 40, NOT.

    I have a StormLake 9mm barrel for converting a S&W M&P 40c ... works just fine. It's a cost-effective way of getting two pistols out of one. As MotorCityGun stated, you can't go UP in caliber, only down.

    -Seawolf
    "Life is tough, but it's tougher when you're stupid." - John Wayne
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    IDPA Member & RSO, KSRA Life Member, NRA Life Member, NRA Firearms Instructor & RSO, KS CCH Instructor (www.thekasdg.com)

  5. #5
    Member Array OperatorJ's Avatar
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    Quote Originally Posted by seawolf1956 View Post
    I have a StormLake 9mm barrel for converting a S&W M&P 40c ... works just fine. It's a cost-effective way of getting two pistols out of one. As MotorCityGun stated, you can't go UP in caliber, only down.

    -Seawolf
    Man, wish I had known that before I bought my 9c...

  6. #6
    Member Array seawolf1956's Avatar
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    Quote Originally Posted by OperatorJ View Post
    Man, wish I had known that before I bought my 9c...
    Yep, I feel your pain. It's all about being an informed buyer. That's why this forum is so useful.

    -Seawolf
    "Life is tough, but it's tougher when you're stupid." - John Wayne
    -------------------------------------------------------------------------------------------------------
    IDPA Member & RSO, KSRA Life Member, NRA Life Member, NRA Firearms Instructor & RSO, KS CCH Instructor (www.thekasdg.com)

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    Member Array OperatorJ's Avatar
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    Quote Originally Posted by seawolf1956 View Post
    Yep, I feel your pain. It's all about being an informed buyer. That's why this forum is so useful.

    -Seawolf
    Yeah, I was informed about the gun in just about every other aspect (still VERY happy with my trade of a G19 for this gun). I didn't come across this forum until recently though. Anyone wanna trade a great condition 9c for a 40c??!

  8. #8
    Senior Member Array Sig35seven's Avatar
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    You can have a 357Sig, 40 cal. or 9mm barrel. 3 guns in one. (Some of them could be full length barrels)

    FYI...If you go with the M&P compact version you can convert from a 10 round magazine to a full size 15 round.

    A VERY flexible gun.
    "Confidence is food for the wise man but liquor for the fool"

  9. #9
    Senior Member Array Spidey2011's Avatar
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    Quote Originally Posted by seawolf1956 View Post
    I have a StormLake 9mm barrel for converting a S&W M&P 40c ... works just fine. It's a cost-effective way of getting two pistols out of one. As MotorCityGun stated, you can't go UP in caliber, only down.

    -Seawolf
    He mentioned putting the entire 40c slide on instead of the 9c slide. IIRC, that SHOULD work, because the problem is only when swapping out the barrels. The 40 barrel won't fit through the hole in the 9c's slide. Correct me if I'm wrong here, because I don't actually have one. I'm just going by what I've heard works.

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