NcSTAR STM3942GV2 User Manual

MARK III TACTICAL SERIES

GENERATION 2

INSTRUCTIONS

MARK III TACTICAL SERIES

1. OCCULAR LENS

2. QUICK FOCUS EYEPIECE

3. BATTERY CAP

4. BULLET DROP COMPENSATOR TURRET
(BDC calibrated for: M193 5.56 55gr. FMJ)

5. ELEVATION ADJUSTMENT (Inside top of BDC Turret)

6. OBJECTIVE LENS

7. RECOIL LUG (Bottom of mount)

8. LOCKING HEX NUT (For Rail Tension adjustment)

9. SLOTTED SET SCREW (For Rail Tension adjustment)

10. RHEOSTAT KNOB (Illuminated Reticle Blue or Green)

11. MAGNIFICATION RING (3X-9X models only)

12. ELEVATION CAP

13. WINDAGE ADJUSTMENT

14. QUICK RELEASE LEVER

15. AUTO LOCKING LATCH

GENERATION 2

The Mark III Tactical Gen 2 scope series offer several compact tactical optic models that are

packed with many of the popular features that are ideally suited for Tactical Shooters.

With a built in M193 5.56 55gr. FMJ Bullet Drop Compensator feature, a shooter can engage
targets at varying distances much easier. The centerline of the Gen 2 scope is set at the proper 1½”
AR15 height for a more comfortable and natural cheek weld on an AR15 platform. The increased
clearance room under the Gen 2 Ocular housing will make it compatible with more low profile Rear
Flip-Up Iron Sight models. The lower profile Gen 2 BDC turret will allow the lower mounting of the
optional Micro Dot optic & MD mount, when mounted onto the top of the scope providing a
secondary optic system. The improved auto Locking Quick Release mounting system makes for a
secure, quick, easy mounting, and removal of the optics from your firearm.

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 Mark III Tactical Scope.

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

KEY FEATURES

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

DIRECTION. PRACTICE SAFE FIREARM HANDLING PROCEDURES AT ALL TIMES.

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

TO DO SO CAN CAUSE DAMAGE TO YOUR SCOPE OR FIREARM

MOUNTING THE OPTIC:

Figure 1

Figure 2

This Optic is equipped with a Quick Release Weaver & Picatinny type rail Mount with an auto
Locking Latch. You should place your firearm on a secure platform, such as a gun vise, before
performing any of the following procedures.

To attach the Optic to a Weaver or Picatinny type rails, move the Locking Latch located within
the Quick Release Lever away from the lever pivot point (to unlock the lever) and then swing the
Quick Release Lever to the forward (Open) position. Place the Optic onto the rail, with the Recoil Lug
placed into one of the cross slots on the rail. Swing the Quick Release Lever rearward (Closed)
position to secure the Optic onto the rail.

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 a consistent zero and proper function of
all the components.

ADJUSTING THE RAIL TENSION OF THE MOUNT:

If the scope’s mount does not fit your firearms rail securely, you can adjust the rail tension of the
mount by following these instructions:

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, Slide the Locking Latch away from the lever pivot point and swing 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 mount onto the rail of your

firearm. 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.