The SureFire X300U-B Ultra Weapon Light, Black is a SureFire weapon light with 1000 lumen output and a B T-slot thumbscrew clamp for Universal and Picatinny rails.
How It Compares
Compare with the SureFire X300U-A Ultra (Black), SureFire X300U-A Ultra (Tan) and SureFire X300U-B Ultra (Tan). Browse all weapon lights & flashlights or the full SureFire range.
Ideal For
- Identifying a target before you decide — 1000 lm
- Rifles and handguns with Universal or Picatinny rails, using the B T-slot thumbscrew clamp
- Home defense and duty use where hesitation costs time
- Keeping weight down on a light build at 4.1 oz
Key Features
- Max Output: 1000 lm
- Mount: B = T-slot thumbscrew clamp for Universal and Picatinny rails.
- Battery / Fuel: Two (2) 123A lithium, included
- Runtime: 1.25 hours
- Water Resistance: IPX7 to 1 m for 30 min
- Body & Finish: Aerospace aluminum
- Length: 3.76 in (9.55 cm)
- Weight: 4.1 oz (116 g)
About This Model
- Output: 1000 lumens
- Mount: B = T-slot thumbscrew clamp for Universal and Picatinny rails.
- Switch: Ambidextrous push/toggle; momentary and constant-on
- Warranty: SureFire No-Hassle Lifetime Warranty
Technical Specifications
Max Output | 1000 lm |
Peak Beam Intensity | 11,300 cd |
Beam Distance | 213 m |
Runtime | 1.25 hours |
Battery / Fuel | Two (2) 123A lithium, included |
Switch / Tailcap | Ambidextrous push/toggle; momentary and constant-on |
Mount | B = T-slot thumbscrew clamp for Universal and Picatinny rails. |
Body & Finish | Aerospace aluminum |
Length | 3.76 in (9.55 cm) |
Weight | 4.1 oz (116 g) |
Bezel Diameter | 1.125 in (2.9 cm) |
Water Resistance | IPX7 to 1 m for 30 min |
SKU / MPN / UPC | X300U-B / X300U-B / 084871324939 |
Warranty
SureFire back this with their No-Hassle Lifetime Warranty: if a product is found defective in materials or workmanship during your lifetime they repair or replace it. Rechargeable batteries and chargers are covered for two years, and normal wear, consumables and abuse are excluded.
US Shipping & Support
Shipped from D&R Sports Center in the USA with fast, tracked delivery. Questions on fit, mounting or which model suits your setup? Our team is glad to help before and after your purchase.
Frequently Asked Questions
What does it mount to?
B = T-slot thumbscrew clamp for Universal and Picatinny rails.
How bright is it?
1000 lm.
What battery does it take?
Two (2) 123A lithium, included.
Is it waterproof?
IPX7 to 1 m for 30 min.
Is this a genuine SureFire product?
Yes — factory-new SureFire, supplied through US distribution. The part number is X300U-B and the barcode is 084871324939.
What warranty does it carry?
SureFire back this with their No-Hassle Lifetime Warranty: if a product is found defective in materials or workmanship during your lifetime they repair or replace it. Rechargeable batteries and chargers are covered for two years, and normal wear, consumables and abuse are excluded.
