NcSTAR SEC3RSR3942G User Manual

TACTICAL 3-RAIL SIGHTING SYSTEM

KEY FEATURES

The 3-RAIL SIGHTING SYSTEM is a new generation of modular tactical sighting systems. The
unique sighting system mount that encompasses a magnified scope, allows the shooter to mount
many different accessories directly to the scope for quick and easy access.

You can mount a secondary sight (red dot/ reflex sight), laser targeting, and a tactical flashlight
directly to the scope. The scope has the rail space on the sighting system mount for a wide variety of
accessories.

Keeps the weight of the accessories closer to the center balance of the firearm, avoiding the front
heavy barrel feel of all the accessories mounted at the front end of the barrel.

Fits virtually any Weaver and Picatinny rails, making it possible to fit onto a wide variety of firearms.

NcSTAR scopes are also backed by our Lifetime Limited Warranty. We trust that you will receive
many years of enjoyment and service from your new 3-Rail Sighting System Scope.

For optimum performance, please follow all of the procedures in this owner’s manual very carefully.

Fig. 1 – Fix Magnification models Fig.2- Variable Magnification models

Fig. 3 - Illuminated Reticle & Variable Magnification models

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MOUNTING PROCEDURE

Your scope mount is the link between your firearm and your optics. It is very important to have a
solid connection between the two in order to ensure proper function of all the components. You
should place your firearm on a secure platform, such as a gun vise, before performing any of the
following procedures.

 CAUTION: CAREFULLY FOLLOW ALL OF THE MOUNTING PROCEDURES. FAILURE

TO DO SO CAN CAUSE DAMAGE TO YOUR SCOPE OR FIREARM

 CAUTION: BE SURE THAT YOUR FIREARM IS UNLOADED AND POINTED IN A SAFE

DIRECTION. PRACTICE SAFE FIREARM HANDLING PROCEDURES AT ALL TIMES.

MOUNTING THE SCOPE TO THE WEAVER/PICATINNY RAIL

Follow these mounting instructions:

1. Begin by loosening the Thumb Nuts (counter-clockwise) on the right side of the mount.

2. With the Mount Thumb Nuts loosened, the Mount Rail Clamp should slide out wider from the

base mount. This will allow you to place the scope onto a Weaver or Picatinny rail. You want
to position the scope, so that when you have your firearm shouldered with a proper cheek
weld you have the scope set the proper distance from your eye. Positioning the scope with the
proper eye relief will give you a full field of view through the scope.

3. Once you have the scope properly positioned on your firearm, slide the Mount Rail Clamp

against your firearm’s optics rail. Begin tightening the Thumb Nuts (clockwise) against the Rail
Clamp to secure the scope to the firearm.

4. Check and verify that the scope is firmly secured and properly mounted onto your firearms

optic rail. Check to see if the scope is position correctly on the firearm’s rail, so when it’s
shouldered that the scope is at a comfortable distance from a proper cheek weld and that you
have a full field of view through the scope.

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LEVELING YOUR RETICLE

With the scope mounted onto your firearm, you may have to adjust the scope in the three rail
mounting system to be plumb and level with the firearm.

If you have to adjust the scope, secure the rifle in a rifle rest, making sure the firearm is plumb and
level in the rifle rest. The use of a torpedo or bubble level can help with leveling the firearm and the
scope’s reticle.

To adjust the scope inside the three rail mount, you will have to loosen all the Allen head bolt screws
securing the upper rail mount from the lower base mount. With all the screws loosened, turn the
scope until the reticle is plumb and level with the firearm. The three rail mount has enough
clearance to allow the scope to be turned in either direction to help with leveling the reticle. When
you have the scope properly leveled you can tighten each screw evenly until the scope is securely
mounted inside the upper and lower three rail mount.

FOCUSING YOUR SCOPE

Your 3-Rail Sighting System Scope is equipped with a Fast Focus eyepiece on the rear of the ocular
lens easily distinguished by the serrated ring (Fig. 4). Once your scope is properly mounted you can
focus your reticle to ensure a clear and crisp image.

Figure 4

1. Hold your firearm and look through your scope in a

comfortable position to where you can see a full
field of view through the scope.

2. Make quick glances through the eyepiece at a

featureless, flatly lit area such as a wall or open
sky.

3. Spinning the eyepiece counter-clockwise will extend the eyepiece outward (generally suitable

for those who are far sighted). Spinning the eyepiece clockwise will bring the eyepiece back
into the ocular lens housing (generally suitable for those who are near sighted)

4. Fine tune 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.

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