OK, here is my Glock 34, which I'm just about finished modifying.
Here's what I've done so far:
Modified the grip and trigger guard.
Added extended mag release from Zevtech (so *much* better)
Milled slide from One Source Tactical with Trijicon night suppressor sights
Vickers Tactical slide release
Zevtech Ultimate Trigger kit upgrade (just need to adjust travel on the trigger)
Dawson precision magwell kit for Gen 4 large backstrap