Sightmark Ultra Dual Shot Pro Spec NV Sight QD
SM14002 Features:Ultra shot pro spec reflex sight.-Interlock internal locking system.Aluminum body with metal protective shield.Wide field of view.Multi-reticle (4 patterns).Adjustable reticle brightness.Parallax corrected.Unlimited eye relief.Adjustable quick detach weaver-mount.Water-resistant and shockproof.SIDE-MOUNTED RED LASER.Low power consumption.Neoprene cover.Multiple night vision settings and integrated red laser, double-pane glass system.Dimensions: -Weight: 1 lb.-Dimensions: 5'' H x 3'' W x 3'' D.Troubleshooting:If the unit turns off during use: Tighten the battery cap to ensure the cap is fully sealed.  Remove and reinstall the battery (see page 5 of user manual).If the reticle is blurry or out of focus: Make sure the lens is clean and does not have any film, fingerprints, or debris covering the surface.If the unit does not turn on/off: If the unit will not turn on, remove and reinstall the battery.  To turn off the unit, the button must be pressed for 3 seconds.If the reticle has a halo: Decrease the brightness level of the reticle.  The halo is caused by excess illumination than is required for the current environment.If the unit is not holding zero: Double-check that the mount screws are tight and secured.See instruction manual and troubleshooting guide (linked below) for additional details