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SureFire
Overview
The SureFire X300V-B Vampire Infrared Weapon Light is designed to provide versatile lighting solutions for tactical applications, featuring a powerful output of 350 lumens and an infrared illuminator for low-light conditions. With a rail mount system, it securely attaches to your firearm, while the use of two CR123A batteries ensures reliable performance in the field. This light is commonly found in builds with a carbine gas system and a 5.56 NATO caliber, making it a suitable choice for both home defense and tactical operations.
SureFire X300V-B Vampire Infrared Weapon Light with T-Slot Mount - 350 Lumens/120mW - Black
SureFire X300V-B Vampire Infrared Weapon Light with T-Slot Mount - 350 Lumens/120mW - Black ranked #23 of the 91 weapon lights builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #18 of the 193 weapon lights builders have added. Builds with this weapon light are mostly chambered in 5.56 NATO (63%, then 9mm 25%), mostly on carbine-length gas (60%, then pistol-length 20%), and mostly AR-15 (82%, then AR-9 18%).
It was hard to find in August 2026, in stock on only 15 of the 26 days we checked, and today 8 of the 9 retailers we track have it in stock. The best price drifted down from $476 to $422.99 over August 2026 without a real sale. Buying today, the lowest price is $465.99 at Optics Planet, above August's low of $422.99, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every light by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Weapon Light Guide →The part most often added in each category by the 38 builds that include this one
LMT MARS-LS PDW Complete Ambidextrous AR-15 Lower Receiver
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Daniel Defense 14.5" 5.56 M4A1 AR-15 Complete Upper - Flat Dark Earth
Radian Raptor Charging Handle & Talon Safety Selector Combo - OD Green
EOTECH 3x30.5mm X 21.6mm Holographic Hybrid Green Dot Sight - HHSGRN
Fortis SHIFT Vertical Grip - M-LOK
Aggregated and anonymized data showing how builders use this product
Builds in the community that include the SureFire X300V-B Vampire Infrared Weapon Light with T-Slot Mount - 350 Lumens/120mW - Black
| Build | Parts | Total |
|---|---|---|
 | 28 | $3615.68 |
 | 37 | $6106.35 |
 | 22 | $2003.32 |
 | 30 | $3191.04 |
 | 18 | $4732.65 |
1 global rating
Top reviews
Surefire X300V-B Vampire combines white light and IR illuminator in one unit. White output at 350 lumens. The IR illuminates targets for night vision without a separate device. T-slot mount clamps without zero shift.
