Again you fail to realize there are different "aperture" type sights. Peep sights and Ghost ring sights are similar as in they operate under the same principle but the Ghost ring is HUGE which is why it is for close range work and works very well for that purpose. But beyond 50 or so yards it becomes quite difficult to hold center of aperture. National match sights are aperture but they are Williams type and most have the target aperture installed which is very tiny.