Fantastic sights. I have run them on a number of glocks. I usually pair the all black front with a .130 rear sight from ameriglo to get a little less light around the front. I also like the .130 ameriglo rear because the notch is slightly deeper which I have found helps with tracking the all black front sight. A .165 tall front hit POA/POI with Gen 3 and Gen 5 19s. I needed a .180T front on a gen 4 19 to have the same "split the bull" POA/POI.