I’ve been trying to find out if you can fit a 19 gen 5 slide onto a 19 gen 4 frame. Gen 4 barrel, recoil spring, and slide release. Do I have to replace the trigger mechanism? Will it work at all? I like the front bevel that the Gen 5 slide has, but I prefer the Gen 4 frame and have a few spare Gen 4 parts. Thanks guys!