If that sight works for you, that's good, but it offers none of the advantages of a peep sight. A peep must be mounted close to the eye so that you look through it, not AT it. My peeps mounted next to the hammer are actually farther from the eye than I would like. Looking through an aperture close to the eye sharpens the view of both the front sight and the target. You needn't worry about getting the front sight exactly centered in the aperture, just look through it, put the front bead on target and squeeze off the shot. Peeps are fast and accurate, but they must be close to the eye to work properly.