Originally Posted by spacemonkey
...The Glock 23/32 grip fits my hand pretty well as is size wise, but I did find undercutting the triggerguard made a world of difference in getting a solid grip on the gun. Since this gets your hand higher up and puts less of your hand on the palm swell it may act as a "grip reduction"...
I undercut (rounded) the trigger-guard on my G21 where the bottom of the trigger guard meets the frame, as well as taking off a little material on the bottom rear side of the trigger-guard (rounded it) where my middle finger rests, and that does make a BIG difference in the "feel" of the grip. I used Swiss hand files and 600 & 1000 grit wet/dry sandpaper.