Streamlight ProTac Rail Mount HL-X Laser, Tac Light w/laser, Black Finish, 1,000 Lumen Light with Red Laser, Fits Picatinny Rail, Includes Remote Switch, Tail Switch, Remote Retaining Clips and Mounting Hardware 88089 The ProTac Rail Mount HL-X Laser is a 1"000 lumen long gun light with an integrated red laser. It features MULTI-FUEL innovation that allows it to accept Streamlight's 18650 USB battery or CR123A lithium batteries" ensuring you'll always have a beam when you need it.