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9mm to .357 conversion

Discussion in 'General Glocking' started by billiardcue, Nov 13, 2012.

  1. billiardcue

    billiardcue

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    Sep 1, 2012
    40 cal & .357 Glocks can be converted to 9mm.

    Can it be done the other way? G17 9mm to shoot .357?
     
  2. barth

    barth six barrels

    6,360
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    Oct 7, 2011
    The Free Zone
    Maybe,
    But even if you can, you really don't want to.
    It's usually better to just get a second gun.
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    Notes from JR before he disappeared on African Safari.
    "The frames of the 26/27/33/39 are all the same.
    You can convert a 26 to a 27 by installing a complete top end and switching the trigger housing from 9 to 40. You will also need a 27 magazine."
     

    Last edited: Nov 13, 2012

  3. serger

    serger

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    Feb 24, 2009
    To go from a 9mm to the 357 Sig you need a different slide, barrel, ejector and extractor. And mags. the frame doesn't care but you are looking at the cost of a gun for the parts unless you wait and look carefully. the conversion is easy. I went from 40S&W to 9mm. That was easier.
    Get a Glock 22 upper and then just get the 357 barrel and you've got 3 calibers. Down side is you bought 1 and a half guns worth of parts to do it +/-. You'll still need the ejector and mags for this conversion.
     
    Last edited: Nov 13, 2012
  4. Bruce M

    Bruce M

    39,543
    10,377
    Jan 3, 2010
    S FL
    I am reasonably sure that a good gunsmith could open up the breach face of the G17 slide. Then it would need probably need a conversion barrel to fire 9mm. Probably wouldn't cost much more than just buying another gun, but it might be a great solution if, for instance, someone was where they cannot import another pistol.
     
  5. G26S239

    G26S239 NRA Patron

    11,409
    224
    Mar 17, 2008
    PRK
    Glock 22/31 has a slide about 1.2 ounces heavier tha a 17.
     
  6. unit1069

    unit1069

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    Oct 10, 2007
    So. Central US
    Not without prohibitive cost and potential difficulties. It would be more cost effective to just purchase a .40S&W/.357sig pistol that you can then easily convert to 9mm.
     
  7. DannyR

    DannyR Moderator Millennium Member

    19,747
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    Dec 17, 1998
    Roanoke, Virginia
    Best way to convert a 3-pin 9mm Glock to 40 or 357 would be:

    1. Buy a complete upper
    2. Buy appropriate magazines
    3. Change the ejector

    Don't even think about it with a 2-pin 9mm Glock.

    Milling a breechface may prove costly and then you also have to enlarge the nose ring so that the barrel will fit.
     
    Last edited: Nov 14, 2012