Sighting In |
The AR-15 rifle has two adjustable sights- front and rear. Zeroing elevation adjustments are made using the front sight, and windage adjustments with the rear. ![]() The rear sight has an elevation knob with range indicators from 300 to 800 meters and two apertures for range. 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. This unmarked aperture is used in conjunction with the elevation knob for 300-800 meter targets. ![]() The rear sight also consists of a windage knob on the right side of the sight. 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. A windage knob pointer is on the windage knob. ![]() The front sight consists of a rotating sight post with a spring loaded detent. This detent can be depressed using a sight adjustment tool, or using a sharp point such as a cartridge tip.
Establish Zero Establish Mechanical Zero -
Carefully aim and fire each shot of a 3-shot group at a paper target set up at 25 meters. If your shots are not striking the point-of-aim, then adjust your sights.
Continue to fire 3-shot groups and adjust the sights until you have a tight group at the point of aim. Once this is done, the unmarked aperture is automatically zeroed. Rifle is now combat-zeroed all other ranges on the elevation knob are also zeroed, so to engage target at say 500 meters, turn wheel to 5. |