Ar-15 High Visibility Rear Aperture Sight - Ar-15 High Visibility Rear Aperture Sight Flip-Up Black

Features two, flip-style apertures for close engagement and precision, distance shooting. Large, ghost-ring for close ranges has .230'''' I.D. opening; precision, long distance aperture with .100'''' I.D. opening. Elevation does not change when switching apertures. Direct replacement for factory rear sight, no modifications to the rifle are required. Mfg: Xs Sight Systems SPECS: Stainless steel, black matte finish. .230" (5.8mm) I.D. large aperture. .100" (2.5mm) I.D. small aperture.