EOTech 553 - Manual (Page 26)

Your Reflex Sight features click mechanisms for elevation and windage adjustments. The
elevation and windage adjustment are located on the right-hand side of the sight (Figure 2). The
knob towards the front is the windage adjustment and the knob towards the rear is the elevation
adjustment. Both of these adjustment mechanisms are grooved with a slotted screw head and
require the use of a screwdriver, coin, or spent brass to turn. The elevation and windage
adjustments are shown in Figure 5. For both elevation and windage, each click will change the
bullet’s point of impact 1/2 Minute of Angle (MOA), 1/4 inch at 50 yards, or 1/2 inch at 100 yards.
Also, one full rotation of either knob will change the point of impact 10 MOA, 5 inches at 50
yards, or 10 inches at 100 yards. To move the point of impact UP, turn the elevation
adjustment LEFT. To move the point of impact RIGHT, turn the windage adjustment RIGHT.
The Reflex Sight elevation and windage adjustments are factory collimated with the bore of the
rifle parallel to the mounting rail. The sight should be close to mechanical zero when mounted
on a properly installed rail. Do not turn the adjustments before mounting the sight on the
firearm. Be sure to check that the mount and sight are securely mounted after initial firing
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