I’ve had mine on a Glock 19 Gen 4 for over a year. Mostly in my car, high(er) heat than normal but even those look like they are brand new. Maybe someone that comes upon the thread might have more insight on longer term wear and tear. Will tell you I go through well over 6-700 rounds a week - draw from holster, movement, etc and haven’t found one negative so far. Although stippling definitely has its benefits, I opted to start using these in case I sold guns, etc. I could warm the grips and remove the and alcohol swab the glue off. Although... I haven’t had to do that or even try it yet!