uhhh so you wanna chop up the glock you have, minimizing resale, instead of just going to the different model? trade someone on the EE. I mean god knows I have chopped my glock up but im keeping it till im cold in the ground. Im married to that gun. I filed off my finger grooves, stippled the 'front strap', got the gripforce adapter plugged in. I'm in the process of carving down the frame to hold short mags [g19 mags]. dura coating the slide. No one in their sane mind would buy it off me.
but you sir have a pretty crispy option in front of you with the gen 4. Just my .67 cents.
-chris