NcSTAR SRTR3942G - Manual (Page 5)

4. Fine tune your adjustments your adjustments until the reticle appears clear and
sharp. Once the eyepiece reaches the outer limits of adjustment be sure not to force
it so as not to ruin the integrity of the seals.
ZEROING YOUR SCOPE
Your Rubber Armored Mark III Tactical Scope is equipped with adjuster turrets for
Windage and Elevation. The Elevation Turret is located within the Bullet Drop
Compensator (BDC) on top of the turret housing. To access the Elevation Turret remove
the Top Cap on top of the BDC by twisting it counter-clockwise (Fig. 4).