The Streamlight ProTac Rail Mount VIR Pro M-LOK SW Kit (Model 88139) is a professional-grade, dual-output weapon-mounted light designed for tactical operators, law enforcement, and serious shooters who require both visible white light and infrared illumination. This advanced model features a powerful white LED for standard illumination along with an integrated infrared LED for use with night vision devices. The kit includes a dedicated M-LOK mount and switch kit, along with a high-capacity SL-B26 rechargeable battery pack, providing everything needed for immediate installation on modern M-LOK compatible firearms.
Visible + Infrared Dual Output
The ProTac Rail Mount VIR Pro stands out with its dual-function capability. In addition to a high-lumen white light for positive target identification, it features a dedicated infrared (IR) LED that is invisible to the naked eye but fully compatible with night vision goggles and monoculars. This makes the light exceptionally versatile for both conventional operations and low-light tactical scenarios where maintaining light discipline is critical. Operators can quickly switch between white light and IR modes depending on mission requirements.
The Streamlight ProTac Rail Mount VIR Pro delivers both powerful white light and infrared illumination in one compact, M-LOK compatible package.
M-LOK Mounting System
This model comes complete with a purpose-built M-LOK mounting system. The included M-LOK mount allows for secure, low-profile attachment to any M-LOK compatible handguard or rail. The mounting hardware is designed for quick installation and provides a rock-solid platform that maintains zero even under heavy recoil. The M-LOK system offers greater flexibility in positioning compared to traditional Picatinny rail mounts, allowing users to optimize the light’s placement for their specific firearm setup.
Included Switch Kit
The “SW Kit” designation indicates that this package includes a remote pressure switch kit. The included switches allow for momentary or constant-on activation without removing the support hand from the firearm. This is a critical feature for tactical and defensive use, enabling fast and intuitive light control during dynamic situations. The switches are designed for ambidextrous use and can be mounted in multiple positions depending on user preference and firearm configuration.
SL-B26 Rechargeable Battery
The ProTac Rail Mount VIR Pro includes a Streamlight SL-B26 lithium-ion rechargeable battery pack. This high-capacity battery delivers consistent power output and extended runtime, reducing the need for frequent battery changes. The SL-B26 can be recharged using Streamlight’s USB charging system, providing a cost-effective and environmentally friendly power solution for professional users who rely on their equipment daily.
Key Features of the Streamlight ProTac Rail Mount VIR Pro
- Visible + Infrared Output – Dual-function white light and IR LED
- M-LOK Compatible Mount – Secure, low-profile attachment
- Included Switch Kit – Remote pressure switches for tactical control
- SL-B26 Rechargeable Battery – High-capacity USB rechargeable power
- Rugged Construction – Built for professional tactical use
- Black Finish – Non-reflective tactical appearance
- Model 88139 – Official Streamlight part number
- UPC 080926881396 – Authentic Streamlight product
Why Choose the Streamlight ProTac Rail Mount VIR Pro?
The Streamlight ProTac Rail Mount VIR Pro M-LOK SW Kit offers a complete tactical lighting solution for modern firearms. Its dual visible and infrared capability provides unmatched versatility for both day and night operations. The inclusion of an M-LOK mount and remote switch kit makes it ready for immediate professional use without the need for additional accessories. Combined with the rechargeable SL-B26 battery, this light delivers the performance, reliability, and convenience that tactical professionals demand. Whether used for law enforcement operations, military applications, or serious home defense setups, the ProTac Rail Mount VIR Pro is engineered to perform when it matters most.
Technical Specifications
| Brand | Streamlight |
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| Model | ProTac Rail Mount VIR Pro |
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| Part Number | 88139 |
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| Mount Type | M-LOK |
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| Output | Visible White Light + Infrared |
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| Battery | SL-B26 Rechargeable |
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| Included Items | M-LOK Mount, Switch Kit, SL-B26 Battery |
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| Color | Black |
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| UPC | 080926881396 |
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Ideal Applications
The Streamlight ProTac Rail Mount VIR Pro is an excellent choice for law enforcement officers, military personnel, and tactical shooters who require both white light and infrared capability. It is particularly well-suited for firearms equipped with M-LOK handguards, including modern AR-15 platforms and other tactical rifles. The included remote switch kit makes it ideal for professional users who need fast, hands-free light activation. This light is also a strong option for home defense setups where night vision compatibility may be desired, as well as for competitive shooters and prepared civilians who want a high-quality, feature-rich weapon light.
Experience professional-grade tactical illumination with the Streamlight ProTac Rail Mount VIR Pro. Featuring visible and infrared output, an M-LOK mount, remote switch kit, and SL-B26 rechargeable battery, this Model 88139 delivers versatile performance for demanding tactical applications. UPC 080926881396.
