The Streamlight ProTac Rail-Mount HP-X Pro Long Gun Light System delivers 105,000 candela along with a 708-yard beam that penetrates smoke, fog, and photonic barriers. Even better, the ProTac delivers multi-fuel versatility, operating on 2 CR123A batteries (included) or one SL-B26 rechargeable battery (not included). The Jack-Cap tail cap switch provides plenty of versatility with both push-button operation or remote pressure switch operation. It's made from 6000 series aluminum with a gasket-sealed glass lens, and it's IPX7 rated to be 100% waterproof to one meter for 30 minutes with tail cap installed (IPX4 water-resistant with remote pressure switch installed). Includes MIL-STD-1913 Picatinny mount, M-LOK mount, momentary switch, and 2 CR123A batteries. Mfrs. lifetime limited warranty. 800-lumen output and 105,000 candela on high setting 708-yard beam max beam distance Fits long guns with Picatinny rail or M-LOK slots Jack-Cap tail cap switch or remote pressure switch operation 6000-series aluminum construction Gasket-sealed glass lens IPX7 rated to be 100% waterproof to one meter for 30 minutes with tail cap switch IPX4 water-resistant with remote switch