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Can I use .357 sig mags in my .40 Glocks?

Discussion in 'General Glocking' started by hsprincipal, Jan 15, 2013.

Tags:
  1. KA5IVR

    KA5IVR

    119
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    Sep 20, 2009
    Texas
    I believe the mags are the same, besides the markings.
     


  2. arshooterone

    arshooterone

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    Sep 27, 2009
    hickok45 said they are.
    [ame="http://www.youtube.com/watch?v=bJPU71yZKvA"]Glock 32 Gen 4 - YouTube[/ame]
     
  3. Yes. Think about it, the wide portion of a .357 SIG round is essentially a .40 round. This means same feed lips.
     
  4. dkf

    dkf

    5,434
    125
    Aug 6, 2010
    Only difference between .40 and .357sig mags is the lettering/numbering on the mag and the follower. You can shoot .40 out of .357sig mags and vise versa.
     
  5. cowboy1964

    cowboy1964

    19,696
    2,133
    Sep 4, 2009
    U.S.A.
    It's supposed to work but they are not identical or Glock would mark them with both calibers like S&W does.
     
  6. garya1961

    garya1961

    1,319
    486
    Mar 17, 2012
    NC
    How do you know this?
     
  7. janice6

    janice6 Silver Member

    31,000
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    Apr 4, 2006
    minnesota
    I use the .357 Sig in my .40 cal mags in a G27 without any issues at all.
     
  8. rdunk

    rdunk

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    Dec 13, 2012
    Texas
    I have both, and the mags I have do have a slight difference. On top of the mags, at the rear where the primer end of the round sits against the mag, there is a cutout opening there. There is a slight difference in the cutout angles of the .40 vs the .357.

    I haven't shot the .40 mags yet in the 32c, so i can't attest to them shooting the same. But, I am definitely assuming that they do!
     
  9. maestrogustav

    maestrogustav

    287
    23
    Nov 14, 2010
    I'm sure this question is coming up more often, due to the relative availability of .357sig mags-- at least at certain moments during the last days- as compared to .40sw mags.

    I nabbed 4 .357sig mags for use in my G22 and 23, simply because I could get them at normal retail last week.

    I have done the closest visual inspection possible. The followers are absolutely identical to the naked eye.

    I would take pics, but even my nice camera with good lighting can't match the human eye, so if you don't believe, please do your own inspection.

    I am comparing the LATEST versions of these. I can make no claim as far as earlier versions, and I don't even know if the followers have ever changed.
     
    Last edited: Jan 16, 2013