Didn't even think about not running a comp, interesting. As I said I was trying to build this gun on the cheap thats why I wanted info on the Wilson comp. Being that is not the way to go what are the thoughts on this. Take a Kimber 9mm Pro Carry Stainless. Full size grip, 4.5" bbl (for that shorty feel). Since the slide is set up for a reverse spring plug I could switch out the barrel (kart, bar-sto, ect threaded) and run a cone comp or threaded comp, using a lighter recoil spring. Pop off the sights, put a slide racker on in the rear dovetail. Drop in a C&S trigger kit, install a C-More Serendipity, Dawson ICE magwell and be done with it. The whole idea is to have FUN and build something and have FUN.