Streamlight ProTac Rail Mount HL-X Tactical Long Gun Light With 2 CR123A 88066 Posted on November 9, 2023 by admin PROTAC RAIL MOUNT HL-X LONG GUN LIGHT. It uses either a remote pressure switch or a standard push-button tail cap switch, and can run on multiple battery types. Specifications Strobe: runs 2.5 hours (CR123A); runs 3.25 hours (SL-B26)Features. Share