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. .230X"X (5.8mm) I.D. large aperture. .100X"X (2.5mm) I.D. small aperture.
Xs Sight Systems Ar-15 High Visibility Rear Aperture Sight
$31.99
Fast, Accurate Sighting In All Light Conditions