The Streamlight ProTac Rail Mount VIR Pro Weapon Light (part 88138) is a dual-spectrum rifle weapon light that pairs high-output white light with an integrated infrared illuminator for night-vision use. It produces 1100 lumens output and 40,000 candela peak beam intensity for a 400-metre beam in white light, plus a 2,300 mW infrared output on high at 940 nm.
This 88138 configuration runs on two CR123A lithium cells and is SL-B26 compatible, with a Jack-Cap tailcap giving push-button operation and a remote pressure switch. White runtimes are 1.5 hours on high, 2.75 hours on medium and 11 hours on low; the infrared runs 1.25 hours on high and 7.25 hours on low. A head-mounted selector switches between visible and infrared with a safety cut-off that prevents accidental white-light activation in infrared mode. It mounts to Picatinny (MIL-STD-1913) or M-LOK, in 6000-series aircraft aluminium with an anodised finish and a BOROFLOAT lens, rated IPX7.
How It Compares
Prefer the other battery package? The ProTac VIR Pro USB rifle light and IR illuminator, which ships with the SL-B26 rechargeable pack. White light only, at long range? The TLR-1 HP-X at 77,000 candela. Read our lumens versus candela chart, or browse the wider range of weapon-mounted lights and our tactical lighting.
Ideal For
- Rifle-mounted lighting for work after dark
- Night-vision-equipped rifles and carbines
- Farm, kennels and yard work after dark
- Long-range target identification, at 40,000 candela and 400 metres
- Airsoft milsim night games where night vision is in use
Key Features
- 1100 / 540 / 120 lumens white output, with 40,000 candela and a 400-metre beam on high
- 2,300 mW infrared illuminator on high (600 mW low) at 940 nm, for night-vision use
- Head-mounted selector with a safety cut-off against accidental white-light activation
- Runs two CR123A lithium cells (included); SL-B26 compatible
- Jack-Cap tailcap with push-button and remote pressure-switch operation
- Picatinny (MIL-STD-1913) and M-LOK mounting; BOROFLOAT lens; 6000-series anodised aluminium
Technical Specifications
| White Output |
1100 / 540 / 120 lumens |
| Peak Beam Intensity |
40,000 candela (400 metres) / 19,000 candela (276 metres) / 4,200 candela (130 metres) |
| IR Output |
2,300 mW high / 600 mW low, at 940 nm |
| Battery |
Two CR123A lithium cells (SL-B26 compatible) |
| Runtime (white light) |
1.5 hours high / 2.75 hours medium / 11 hours low (CR123A) |
| Runtime (infrared) |
1.25 hours high / 7.25 hours low (CR123A) |
| Mount |
Picatinny (MIL-STD-1913) / M-LOK |
| Lens / Material |
BOROFLOAT / 6000-series anodised aluminium |
| Length / Weight |
5.65 in (14.35 cm) / 8.2 oz with CR123A cells |
| Water Resistance |
IPX7 with the push-button fitted; IPX4 with the remote switch fitted |
| SKU / MPN / UPC |
88138 / 88138 / 080926881389 |
What's Included
- Streamlight ProTac Rail Mount VIR Pro weapon light
- Remote pressure switch and remote retaining clips
- M-LOK mount and mounting hardware
- Two CR123A lithium batteries
- Manual
UK Delivery & Support
Imported from the USA, duty paid by us, and dispatched tracked from the UK — nothing to pay on delivery — backed by UK-based support.
Frequently Asked Questions
What does the Streamlight ProTac Rail Mount VIR Pro (88138) mount to?
The Streamlight ProTac Rail Mount VIR Pro mounts to Picatinny (MIL-STD-1913) rails and to M-LOK, and the M-LOK mount and mounting hardware are supplied in the box.
How bright is the Streamlight ProTac Rail Mount VIR Pro and how far does the white beam reach?
The Streamlight ProTac Rail Mount VIR Pro produces 1100 lumens output and 40,000 candela peak beam intensity on high, which gives a beam distance of 400 metres; the medium and low settings give 540 lumens at 276 metres and 120 lumens at 130 metres.
Do I need night vision to use the infrared on the Streamlight ProTac Rail Mount VIR Pro?
Yes — the infrared illuminator on the Streamlight ProTac Rail Mount VIR Pro works at 940 nm, which is invisible to the naked eye and requires night-vision equipment to see.
What battery does the Streamlight ProTac Rail Mount VIR Pro use, and is it rechargeable?
The Streamlight ProTac Rail Mount VIR Pro 88138 runs on two CR123A lithium cells, which are supplied, and it is compatible with Streamlight's SL-B26 rechargeable pack. If you want the rechargeable pack and cord in the box, the USB version is part 88139.
How long does the Streamlight ProTac Rail Mount VIR Pro run for?
The Streamlight ProTac Rail Mount VIR Pro gives 1.5 hours high / 2.75 hours medium / 11 hours low (CR123A) in white light, and 1.25 hours high / 7.25 hours low (CR123A) in infrared.
Is the Streamlight ProTac Rail Mount VIR Pro waterproof?
The Streamlight ProTac Rail Mount VIR Pro is rated IPX7 with the push-button tailcap fitted, and IPX4 when the remote pressure switch is fitted instead.
