The Streamlight ProTac Rail Mount HL-X is a 1,000 lumen weapon-mounted light featuring a dedicated fixed-mount for Picatinny rails. It uses either a remote switch with momentary/constant on operation or a standard push-button tail switch, and can run on either two CR123A lithium batteries or one Streamlight rechargeable 18650 battery.


- Features TEN-TAP® Programming – Choose from three user selectable programs:
  1.) high/strobe/low; 2.) high only; 3.) low/high
- C4® LED illumination output and run times:
- High for maximum illumination: 1,000 lumens; 27,600 candela; 332m beam; runs 1.25 hours (CR123A batteries); runs 1.5 hours (18650 battery)
- Low for extended run time: 60 lumens; 1,600 candela; 80m beam; runs 20 hours (CR123A batteries); runs 22 hours (18650 battery)
- Strobe for signaling or disorienting: runs 2.5 hours (CR123A batteries); runs 3.25 hours (18650 battery)
- Solid State power regulation provides maximum light output throughout battery life
- Dual fuel - uses two CR123A lithium batteries (included); also accepts one Streamlight rechargeable 18650 lithium ion battery