Love these sights. Installation was easy and they are extremely solid. I was an idiot and dropped the slide cleaning my pistol after testing the new sights at the range. It fell on my stone tile floor top first, right on the new sights. There were some scuffs in the finish but that was it. A similar accident had knocked my factory rear sight right out which is why I needed a new set so I am thoroughly impressed. Overall functionality is 10/10 a huge upgrade from the factory sights.