Ade Advanced Optics Class 3R Green Laser Illuminator/Hunting Flashlight with Quick Release Mount, Black Visible Green Illuminating Beam up to 200 Yards in Pitch Dark Tactical Style, Beam Diameter Size Adjustable Windage & Elevation Adjustable With Build-in Quick Release Picatinny Mount Visible Strong Green Laser Sight; Operates with one CR123 battery(included)