LG ND3X40 Green Laser 40 w/Scope Mount 532nm 30mW Adj Intensity Up to 3mi Blk

The ND-3 X 40 and ND-3 X 50 Laser Designators are precision optical lighting instruments using advanced green laser technology. The patented Rotary Optical Collimator allows full adjustment and control of beam diameter and intensity to focus light where you need it most. Rotating the collimator provides enough illumination to light a trail at night or paint a target at up to 400 yards with th ND-3 X 40 and 500 yards with the ND-3 X 50. Two CR123A 3V batteries provide over 7 hours of continuous use.