The ProTac Rail Mount HL-X Pro is a lightweight, low-profile long gun light that produces 50,000 candela of power. Its Jack-Cap tail switch offers operational switch redundancy push-button operation or remote pressure switch operation. Runs on either two CR123A lithium batteries or one SL-B26 USB battery pack. The remote pressure switch attaches to the Jack-Cap via the incorporated port. The rail clamp is designed to securely attach to rifles, carbines, and submachine guns with a MIL-STD-1913 rail or with the included M-LOK mount allowing for alternative mounting options to M-LOK and M-LOK compatible rail systems. The Ten-Tap programming allows operator to choose preferred operating mode: High/Strobe, High Only, Low/High. This model is Light Only.