This detent can be depressed using a sight adjustment tool, or using a sharp point such as a cartridge tip. The front sight consists of a rotating sight post with a spring loaded detent. A windage knob pointer is on the windage knob. Each click of the windage knob will move the strike of the round from 1/8 inch at 25 meters to 4 inches at 800 meters. The rear sight also consists of a windage knob on the right side of the sight. This unmarked aperture is used in conjunction with the elevation knob for 300-800 meter targets. One aperture is marked 0-2 for short range from 0-200 meters and the unmarked aperture for normal range from 300 to 800 meters. The rear sight has an elevation knob with range indicators from 300 to 800 meters and two apertures for range. Zeroing elevation adjustments are made using the front sight, and windage adjustments with the rear. The AR-15 rifle has two adjustable sights- front and rear.
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