Just installed Truglo fiber optic sights on my 380 EZ . The rear sight camp off with no trouble but, the new one took a little sanding. I had to sand the base as well as the front leading edge of the sight. And it still took my sight pusher to get it on properly. The OEM front one WAS a bear to remove the retaining clip . I tried everything in my firearm tools and nothing worked until I used a steak knife to bend it up enough to pop it off. I had already got 2 extra clips and promptly lost one somewhere in Neverland. The new Truglo uses the glock front sight tool to start the tiny screw into the bottom of the sight. The new clips are slightly cupped and are a pain to get started unless you leave the screw loose and the orientation of the clip is curved side up or down, I chose up. A little removable loctite on screw thread and tighten down and finally done. Long winded I am, RIGHT !!