I just finished replacing the sights on my P45. I have posted the before and after photos in a seperate thread. I had read that the Kahr sights were notoriously hard to remove and I believed it. So I purchased a P500 universal sight tool from Brownells to assist in the process. The P500 holds the slide of the gun in a fixed delrin-lined jaw while the sight is pushed out using an adjustable screw mechanism. I have attached photos that show the P45 slide chocked up in the tool during removal. The changeout went as planned with no problems. The factory sight did take a little effort and it "jumped" as the screw was tightened rather than walked out. The AO sight pressed in more smoothly. The total time from start to finish was ~20 minutes. I purchased this tool for ~$110 versus the $60 plus shipping that I was quoted to send the slide to Kahr for sight replacement. Am I upside down on this purchase? Not really, I also used it to replace the sights on my P14-45 Limited and Springfield Loaded Champion, both of which would have taken some effort to do with vise, hammer, and punch. Besides I used to develop a serious pucker factor hammering on my guns. The P500 Universal Sight Tool is a winner in my book. HC Wanna kill these ads? We can help!