Ma Standard Sights And Zeroing

Rear sight. The rear sight consists of two sight apertures, a windage knob, and an elevation knob (Figure 3-25).

Picture M16 Elevation Knob

The larger aperture, marked 0-2, is used for moving target engagement and during limited visibility. The unmarked aperture is used for normal firing situations, zeroing, and with the elevation knob for target distances up to 800 meters. The unmarked aperture is used to establish the battlesight zero.

After the elevation knob is set, adjustments for elevation are made by moving the front sight post up or down to complete zeroing the rifle. Adjustments for windage are made by turning the windage knob.

The rear windage knob start point is when the index mark on the 0-2 sight is aligned with the rear sight base index (Figure 3-26).

Machine Gun Rotating Sight

Front sight. The front sight is adjusted the same as the front sight of the M16Al. It consists of a square, rotating sight post with a four-position, spring-loaded detent (Figure 3-27). Adjustments are made by using a sharp instrument or the tip of a cartridge. To raise or lower the front sight post, the spring-loaded detent is depressed, and the post is rotated in the desired direction of change. (Figure 3-28).

Front Sight Adjustment M16
Figure 3-28. Front sight adjustment.

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