Glock 34 conversion to 357 sig?

[Lonestargrizzly]

Is it possible to buy a glock 31 slide and mount it on my glock 34 frame?
I realize that I would be going from a 9mm to 357 sig, but I want to see if it is possible.
Thanks!

[Marteen]

You need new magazines, ejector, make sure you have a 3 pin frame (Should be with glock 34.)

[Ubermcoupe]

.40 mags will work for .357sig. With everyone bailing out of .40, you should be able to pick one up for practically free...