Glock 19 - conversion to S&W 40?

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    1. #1
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      Glock 19 - conversion to S&W 40?

      Does anyone know if this is possible? Has anyone ever done this?

      If so, is it as simple as new spring, barrel and magazine? If it's not that simple, I wouldn't do it. What about cost for these parts?

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    3. #3
      Member rgrundy's Avatar
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      The diameter of the case head of the 40 is bigger so it won't be an inexpensive project.

    4. #4
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      Unless I'm mistaken, while you can change a .40 to a 9mm, you can't change a 9mm to a .40. While the guns are about the same size, the interior dimensions of the 9mm will not handle the .40. Take a look at those links Cat posted, you won't find a single .40cal barrel for a Glock 19.

    5. #5
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      DJ Niner's Avatar
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      The only way to make this work is to get a full .40 caliber top half (barrel and slide assembly) of the same length, and a .40 ejector housing for the frame. Assuming your 9mm is a later-production 3-pin frame, a new .40 top end and ejector housing would turn it into a .40.

      As said above, the breechface on a 9mm slide is too narrow to allow a .40 case to slide up and sit against the breechface at all, so a new slide and barrel is required to make this work.

    6. #6
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      Quote Originally Posted by VAMarine View Post
      Unless I'm mistaken, while you can change a .40 to a 9mm, you can't change a 9mm to a .40. While the guns are about the same size, the interior dimensions of the 9mm will not handle the .40. Take a look at those links Cat posted, you won't find a single .40cal barrel for a Glock 19.
      Thanks for all the posts!

      Based on the above, it sounds like I got it backwards.

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