I have owned 8 or 10 Glocks and shot several more. All of them with factory fixed sights shot high at 25 yards. Almost all of them were 4 to 6 inches high. This is off a rest. Groups were great but high. Now I hat a gun that shoots that high. I like mine to be dead on to an inch high at 25. So I have to replace the front sight on all the Glocks I keep for myself. Mine all wear night sights so I am forced to spend $30 bucks to get her to shoot where she looks. Why do you supose they do that?