SightMark LoPro Laser/Light/IR Combo 300 Lumens Picatinny Rail Mount Flat Dark Earth Green Laser 5mW 520nM Wavelength. These Green Laser Sights developed by SightMark are corrosion-resistant weatherproof and shockproof outlasting the elements braving rain snow and sleet and handling the harsh recoil from your rifle. This SightMark LoPro Flashlight/Laser Combo Attachment offers 1 MOA-click value adjustments and hand-adjustable windage and elevation turrets that allow you to fine-tune your device for guaranteed accuracy. With