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The XS Same Plane Rear AR Mil-Spec 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.

Specifications:

- Rear Aperture Only
- Fits: AR-15/M16 A2 Housing
- Large Aperture: .230 I.D.
- Small Aperture: 100 I.D.
- Material: Blued Steel
- Finish: Matte Black