I like all types of iron sights, but aperture sights are easiest to shoot accurately. I have a peep on my M14 and one for my M25 Remington’s, watching for one for the m121. Shot small bore 3 position for many years and high power for a while so receiver mounted peeps are well understood. I have a tang on a Low Wall 45colt and not really in love, figured out it gets in the way. I mostly hunt with pre war vintage sporting guns and that means open sights mostly. Now a favorite 22 is a Winchester M69, first year with the receiver peep sight. That rifle is slim and trim and that little peep is awesome! I will try and post a picture, don’t see them often. Seems lots of fine sights got relagated to junk drawers when scopes became mainstream. Scopes have their place, but I think everyone should learn to setup and use metallic sights, both open and aperture styles. With the proper bull and properly setup double apertures, I shoot better groups than with a typical scope. Hunting is different, a scope extends your range and low light, as well as “ helping our “vintage” eyes!