Any corrections which may be required when sighting-in the weapon may only bo performed by adjusting the rear sight for elevation o-r windage.
Insert elevation adjustment tool into the rear sight cylinder (Fig. 37) in such a manner that the wedges of the tool engage the two splines in the cylinder, which contain the catch bolts. Press Phillips-head screwdriver downward into the adjustment tool and hold firmly. Rotate rear sight cylinder manually in the desired direction (rotating clockwise lowers the strike 1.4 cm (0.55 in.) per click at a range of 25 m, rotating counterclockwise raises it correspondingly). After performing the correction, withdraw Phillips-head screwdriver and remove elevation adjustment tool. The catch bolts will then reengage in the splines.
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