The Streamlight ProTac Rail Mount VIR Pro USB Weapon Light is a dual-spectrum rifle weapon light combining high-output white light with an integrated infrared illuminator for night-vision use. A head-mounted selector switches between visible and IR modes, with a safety cut-off that prevents accidental white-light activation during IR operation.
It produces 1100 lumens and 40,000 candela of white light (400m) plus a 2,300mW IR output on high. This 88139 configuration includes Streamlight's SL-B26 USB rechargeable battery pack and USB cord (also runs 2× CR123A) and a Jack-Cap tailcap with push-button and remote pressure-switch operation. 6000-series aircraft aluminium with anodised finish, BOROFLOAT lens, IPX7.
How It Compares
Prefer the CR123A model? See the VIR Pro (88138). Browse all weapon lights and the tactical lighting range; read our guide.
Ideal For
- Night-vision-equipped rifle setups
- Professional and tactical low-light use
- Long-range target ID with white or IR
Key Features
- 1100 lm / 40,000 cd white light (400m)
- Integrated IR illuminator, 2,300mW high (940nm)
- White/IR selector with safety cut-off
- SL-B26 USB rechargeable included (2× CR123A compatible)
- Jack-Cap tailcap (push-button + remote); Picatinny/M-LOK; IPX7
Technical Specifications
| White Output |
1100 / 540 / 120 lm |
| Peak Beam Intensity |
40,000 cd (400m) / 19,000 cd (276m) / 4,200 cd (130m) |
| IR Output |
2,300mW high / 600mW low (940nm) |
| Battery |
SL-B26 USB rechargeable (included) / 2× CR123A |
| Runtime (white) |
2 h / 3.75 h / 14 h (SL-B26); 1.5 h / 2.75 h / 11 h (CR123A) |
| Runtime (IR) |
2 h high / 9 h low (SL-B26); 1.25 h high / 7.25 h low (CR123A) |
| Mount |
Picatinny (MIL-STD-1913) / M-LOK |
| Lens / Material |
BOROFLOAT / 6000-series anodised aluminium |
| Length / Weight |
5.65 in (14.35 cm) / 8.8 oz with SL-B26 (8.2 oz with CR123A) |
| Water Resistance |
IPX7 with push-button; IPX4 with remote switch fitted |
| SKU / MPN / UPC |
88139 / 88139 / 080926881396 |
| Warranty |
Streamlight limited lifetime warranty |
What's Included
- Streamlight ProTac Rail Mount VIR Pro USB
- SL-B26 rechargeable battery pack + USB charging cord, remote pressure switch + remote retaining clips, M-LOK mount, mounting hardware, manual
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and Streamlight's limited lifetime warranty.
Frequently Asked Questions
What is the IR illuminator for?
It provides infrared light visible only through night-vision devices, for covert illumination — with a safety cut-off to prevent accidental white light in IR mode.
88139 or 88138?
The 88139 includes the SL-B26 USB rechargeable pack and USB cord; the 88138 ships with two CR123A cells and no cord.
What rails does it fit?
Picatinny and M-LOK.
