This powerful, rechargeable 2,000 lumen light features a dedicated fixed-mount for Picatinny rails with standard push-button tail switch Use in close quarter combat or to identify medium range threats Rugged, reliable, and easy to use Rail clamp designed to rapidly and securely attach/detach from rifles, carbines, and long guns with a MIL Standard 1913 Rail 2,000 lumens and 266m beam on high mode or switch to low mode for 11 hours of runtime High/Low/Strobe modes with TEN-TAP programming to choose your preferred operating mode Powered by the new SL-B50 battery pack that charges using a USB-C cord outside of the light or inside, no need to remove from your weapon! Momentary/Steady on-off switch, dust-tight, waterproof and impact-resistant to 2m