Protac 2.0 Rail Mount System W/ Straight Pressure SwitchThis powerful, rechargeable 2,000 lumen light features a dedicated fixed mount for Picatinny rails and uses either a remote switch or standard push button tail switch (both included). 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 266 meter beam on high mode