I understand that the GAP guns use the same size frame as the 9mm/40/357sig, and that it's a lower pressure cartridge than, say, 357sig. With a G32, I can throw in a G23 barrel, or a LW 9mm conversion barrel and use G19 mags. My question is, can I throw a G38 barrel in it with G38 mags, or is the slide different? If the slide is different, can I just pick up a G38 slide and pair it with the G38 barrel and G38 mags on my G32 frame? Or is it just not going to happen? Thank you in advance for your time and knowledge!