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The M16A2 rifle has two adjustable sights — front and rear. Elevation adjustments are made using the front sight, and elevation changes and windage adjustments are made using the rear sight.
The sight systems. The rear sight has an elevation knob with range indicators from to meters and two apertures for range. One aperture is marked for short range from meters and an unmarked aperture for normal range from to meters. This aperture is used only when the rear sight is all the way down. This aperture is used for most firing situations.
It is used in conjunction with the elevation knob for to meter targets. The rear sight also consists of a windage knob on the rear side of the sight Figure The front sight consists of a rotating sight post with a spring-loaded detent Figure Rear sight.
Front sight. Sight adjustments. To adjust elevation, depress the detent and rotate the sight post Figure To raise the strike of the round, rotate the sight post in the direction of the arrow marked UP. Reverse the direction of rotation to lower the strike. Zero the rifle. The following steps will establish a zero at 25 meters, your M16A2 rifle sights will be set with a meter battlesight zero. Establish mechanical zero on the rifle.
Figure Depress detent. Zero at 25 meters. The elevation knob will remain in this position until the battlesight zeroing has been completed. To lower your next shot group, rotate the front sight post DOWN counterclockwise.
One click will move the strike of the round one square on the target. To move the shot group to the right, turn the windage knob clockwise. Three clicks of the windage knob will move the strike of the round one square on the target. There are clicks between the range numbers as you turn the elevation knob. Use these clicks if you need more elevation past a certain range number to hit a target. The unmarked aperture is automatically zeroed to meters.
Use the aperture when shooting at night or at close ranges; for example, in an urban environment or in dense jungle. Sight setting. If you are told to engage a target at a longer range; for example, meters:. Rotate the elevation knob so that the desired range mark is aligned with the index mark on the left side of the sight.
Engage the target. When the engagement is over, return the sight to the meter setting. Sponsored advertisement:.
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Zero and M16A2 Rifle