NcSTAR STH432G - Manual (Page 3)

MOUNTING SCOPE TO A WEAVER/PICATINNY RAIL
1. To perform this action, move the Quick Release Lever to the Closed position pointing towards
the Ocular Lens/ Eyepiece (Fig. 1). Begin by loosening the Locking Nut on the left side of the
mount. Using a wrench, turn the Locking Hex Nut Counter-Clockwise (Fig. 2).
2. Next, turn the Quick Release Lever to the Open position pointing towards the Objective Lens.
Using a flat blade screwdriver, loosen the Slotted Set Screw in order to fit the mounting unit to
the rail on your firearm (Fig. 2). Seat the scope on top of your firearm’s optics rail with the
Objective Lens pointing towards the muzzle of the firearm. Shoulder the firearm and adjust
the position of the scope on the optics rail until you have achieved the proper eye relief and
maximum field of view through the scope. Once you have your scope positioned properly,
close the Quick Release Lever. Now, tighten the Slotted Set Screw until it is snug using a flat
blade screwdriver.
3. At this point your scope and mount are in place, but they are not yet anchored to the firearm
solidly. Open the Quick Release Lever and make small adjustments to the Slotted Set Screw.
Open and Close the Quick Release Lever checking the tightness of the mount. Perform this
action as many times as necessary until the mount is set firmly atop the rail.
 CAUTION: IT DOES NOT TAKE A LOT OF FORCE TO GET THIS UNIT MOUNTED
SECURELY. BE CERTAIN NOT TO OVER TIGHTEN THE SLOTTED SET SCREW TO
AVOID STRIPPING THE THREADS. DAMAGE CAN ALSO OCCUR TO QUICK
RELEASE LEVER IF TOO MUCH FORCE IS APPLIED.
4. Once you have properly tightened the Slotted Set Screw and checked the rail tension of the
mount connection by opening and closing the Quick Release Lever, you can now tighten the
Locking Hex Nut to secure the adjustments you have made. Tighten the Locking Hex Nut with
the Quick release lever in the closed position for best results. Be sure not to over tighten the
Locking Hex Nut to avoid stripping it. You have now successfully mounted your scope. By
simply opening the Quick Release lever and pivoting the scope in the direction of the locking
nut, you can easily remove the scope from your firearm. Make a reference as to the position
of the scope and mount in relation to the rail so that eye relief settings may be retained.