Burris Optics 1-6x24 RT-6 Riflescope and FastFire III Reflex Sight Tactical Kit (Illuminated Ballistic AR Reticle, Matte Black) - Manual (Page 4)

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3. Keeping firm grip on the knob, use the pen
to turn the dial back to zero, lining up the
number zero with the white indicator dot.
Only the numbered dial should move – do
not allow the entire knob to move or else
you will alter your windage and elevation
zero settings.
NOTE: You do not have to reset the zero on
your dials for your scope to function properly.
Doing so can give you peace of mind that your
zero is set, plus you can easily confirm if it has
moved at any time, but this step is optional.
Throw Lever Adjustment
The RT-6 comes with an integrated throw
lever on the magnification ring. Featuring a
versatile design, it can be positioned at any
point on the ring.
To change the position of the lever, loosen the
locking screw using the supplied wrench. Slide
the lever off the current rib and select your pre-
ferred position and then slide the lever over the
new rib. Position the lever anywhere along the
rib. Tighten the mounting screw on the top of
the lever using the supplied hex wrench. Make
sure that it is snug, but do not over-tighten.