NcSTAR DLB140R - Manual (Page 5)

1. Begin by loosening the Mount Locking Nut (12) on the left side of the mount. To
perform this action, be sure that the Quick Release Lever (10) in the closed
position pointing towards the eyepiece. Using a wrench, turn the Mount Locking
Nut (12) counter-clockwise.
2. Next, turn the Quick Release Lever (10) to the open position pointing towards the
objective lens. Using a small flathead screwdriver, loosen the Mount Set Screw
(11) in order to fit the mounting unit to the rail on your firearm. Seat the sight on
top of your firearm’s rail with the objective lens pointing towards the muzzle.
Make sure that the recoil lug on the bottom of the Quick Release Mount (9) fits
securely into a slot on your firearm’s rail. Shoulder your firearm and adjust the
position of the sight until you have achieved the desired amount of eye relief.
Once you have your sight positioned properly, close the Quick Release Lever (10)
once more. Now, tighten the Mount Set Screw (11) until it is snug using a small
flat head screwdriver
3. At this point your sight and mount are in place, but they are not yet anchored to
the firearm solidly. Open the Quick Release Lever (10) and make small
adjustments to the Mount Set Screw (11). Open and close the Quick Release
Lever (10) 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 careful to not over
tighten the Mount Set Screw (11) in order to avoid stripping it. Damage can also
occur to Quick Release Lever (10) if to much force is applied.
4. Once you have properly tightened the Mount Set Screw (11) and checked the
firmness of the mount connection by opening and closing the Quick Release Lever
(10). You can now tighten the Mount Locking Nut (12) to secure the adjustments
that you have made. For best results, tighten the Mount Locking Nut (12) with the
Quick Release Lever (10) in the closed position. Be sure not to over tighten the
Mount Locking Nut (12) in order to avoid stripping it. You have now successfully
mounted your sight. By simply opening the Quick Release Lever (10) and
pivoting the sight in the direction of the Mount Locking Nut (12), you can easily
remove the sight from your firearm. Make a reference as to the position of the
sight and mount in relation to the rail, so that eye relief settings may be retained
when the sight is put back on the firearm.
OPERATION
The Rheostat Knob (5) performs a number of functions. The Rheostat Knob (5) acts as an
on/off switch for both the Red Dot Sight and the Laser Sight. The number or letter that is
pointed directly up on the Rheostat Knob (5) is the one that is selected. The DLB140R
will turn off when the Rheostat Knob (5) is set to the number “0”. The numbers “1-5” are
different brightness settings for the red dot sight, in which “1” is the dimmest setting and
each setting afterwards becomes increasingly brighter. The letter “L” on the Rheostat