Back to the original question, "Whats so bad about glock factory sights?" I think a lot of times not having a blacked out rear sight can benefit new shooters because it gives them a little bit of contrast between the ft and rear sight. However, once you get a little experience and start to see things a little better while shooting, a blacked out rear target style sight is soooooo much better then dots or goal post or anything else people come up with.