Originally Posted by Meanie5470
The g31 and g22 are identical aside from the barrel. Thats the only thing you need to swap to shoot the other caliber. Mags are the same too.
This is the info I was looking for - I'm mainly focusing on having plenty of 9mm around for my G19 and G26, but I want a third gun that's flexible on caliber for situations where 9mm gets hard to find. I also want to try a "full size" frame Glock.
So the G31 can shoot .40 with only a barrel change with either G31 or G22 mags? Can it also shoot 9mm with a barrel and G19 15-round mags, or will it need G17 mags?