BEAMSHOT GB8300S Green Laser Sight True Daylight Laser with Quick Detach System(High Qualitybr 532nm green laser beam at 500 yards nighttime range 20 times brighter than red laser sights and visible in broad daylight br Ambidextrous MomentaryConstant onoff toggle switch design br Innovative quick attachdetach weapon rail mounting system for M1913Picatinny rail patented br Powered by one CR123A battery that provides approximate 4 hours continuous laser use br Built - in wrench for laser adjustment Shock and water resistant Valued 40