I have (had) them on my Glock 43. I found it no longer shot point of aim, but was shooting a little low. Also, I couldn't tighten the front sight fully so it would move just a bit left/right also throwing the aim off a bit. Finally, I find the yellowish/greenish colored square front sight a bit hard for my eyes to easily pick up - and the tiny night sight tritium portion is nearly useless. None of those three issues made the G43 unusable at defensive ranges (say inside ~20'). However, I ended up replacing the front sight with a stock Glock steel front sight and filled in the rear sight luminescent yellow/green line with bright white fingernail polish. Overall, I think the design concept is fine, but I wouldn't buy another set. Instead, I'd try the orange colored front dot sight with a blacked out rear sight, or a fiber optic front sight with blacked out rear. That's just my take.