I have a 17 with a first gen Trijicon RMR and a 19 with a Leupold DeltaPoint. I have several hundred rounds through each and everything still looks fine....no issues at all. Hopefully everything is still good when I have several thousand through them. I do have a Burris FFIII on an AR as well, and everything looks good there so far too. The sights certainly help out with my aging eyes!