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SureFire X300U-B Ultra-High-Output LED WeaponLight - 1,000 Lumens, Total Internal Reflection (TIR) Lens, T-Slot Thumb-Screw Mount, Aerospace Aluminum Body, Tan / FDE Finish - X300U-B-TN / 084871324946
Product Description
Deploying a primary duty sidearm, staging an active home defense firearm, or setting up a tactical long gun requires a weapon-mounted illumination tool that delivers intense target identification without sacrificing peripheral beam spread. standard lower-tier flashlights introduce thermal throttling, loose rail fitment, or weak beam throw that fails to overcome photon barriers under dynamic low-light scenarios on your bench. The **SureFire® X300 Ultra WeaponLight (X300U-B-TN / 084871324946)** flatlines these lighting limitations, outputting a blinding **1,000-lumens of white LED illumination** backed by a precision-engineered T-Slot thumb-screw clamp system.
Proudly designed, CNC-machined, and endurance-tested to rigid duty metrics in the United States by SureFire, the X300U-B is carved from high-tensile **aerospace aluminum alloy** finished in a tough, corrosion-resistant Mil-Spec anodized Tan/FDE dressing. Centered around a specialized Total Internal Reflection (TIR) lens, this light shapes a intense, far-reaching center beam with ample peripheral light to maintain situational awareness. The "B" designation indicates SureFire's heavy-duty **T-Slot thumb-screw rail clamp**, which uses a solid cross-bolt to anchor rock-solid onto metal frame rails, polymer accessory tracks, or Picatinny long-gun mounts without loosening under heavy recoil shock. Activated via ambidextrous rear push/toggle switches, this turn-key tactical illuminator upgrades your weapon platform's target identification metrics straight from your armorer bench.
Engineered to interface seamlessly with Universal (P) and Picatinny (S) accessory rails across full-size handguns and long-gun forearms, this factory-calibrated illuminator guarantees absolute zero-shift stability directly from your workspace bench.
*Armorer Bench Notes & Real-World WeaponLight Staging Guidance: The SureFire X300U-B-TN package arrives workspace ready, containing the anodized tan aluminum light body, 2x SureFire 123A lithium batteries, interchangeable rail alignment latch keys (Universal and Picatinny), Allen wrench, and an instruction manual. PROPRIETARY RAIL MOUNTING INTERFACE MATRIX: The T-Slot thumb-screw clamping mechanism is engineered natively to lock down on **MIL-STD-1913 Picatinny rails and standard Universal handgun accessory slots**. *Mounting Selection Checklist:* The "B" series thumb-screw system is specifically recommended for **aluminum frame pistols (1911s, CZs, Sig P226), polymer handguns with precise rails, and long-gun Picatinny handguards**—if you are mounting exclusively on softer polymer frames where over-tightening is a concern, the lever-latching X300U-A model is an alternative option. Armorer Workbench Custom Staging Sequence: 1. Visually and physically confirm your host firearm is completely clear of live ammunition, the magazine is removed, and the chamber is checked safe and empty. 2. Verify that the correct rail key ("P" for Universal handgun slots or "S" for MIL-STD 1913 Picatinny rails) is installed in the top mounting channel of the light. 3. Loosen the side thumb-screw counter-clockwise to open the side clamping jaw width on your bench. 4. Slide the light onto your weapon\'s rail from the front until the rail key locks firmly into your chosen rail groove. 5. Hand-tighten the side thumb-screw clockwise until snug, then use a coin or flathead driver to add an additional 1/4 turn to lock the cross-bolt down tightly. 6. Press forward on either side of the rear switch for momentary-on activation, or rotate the switch up/down for constant-on performance before rolling downrange.*
Key Features
- 1,000-Lumen Ultra-High Output: High-performance recoil-proof LED generates 1,000 lumens of brilliant white light to illuminate dark environments and temporarily blind adversary night-adapted vision.
- Precision TIR Optical Lens: Shapes a focused, far-reaching central beam with high candela intensity while providing adequate surround light for broad field awareness.
- Heavy-Duty T-Slot Thumb-Screw Mount: Features a mechanical cross-bolt clamp system that attaches rock-solid to Universal and Picatinny rails, preventing light movement under high-volume firing schedules.
- Ambidextrous Intuitive Switching: Outfitted with rear-facing press/toggle switches that allow fluid momentary-on or constant-on activation with either hand.
- Mil-Spec Anodized Aluminum Body: High-strength aerospace aluminum chassis is hard-coat anodized in desert Tan/FDE to resist impact damage, abrasion, and harsh chemical bore solvents.
- Weatherproof O-Ring Sealed Shell: Sealed with O-rings and gaskets to achieve IPX7 waterproof ratings, keeping internal circuitry bone dry in harsh weather environments.
Product Specifications
- Brand: SureFire® (Fountain Valley, CA / Made in the USA)
- Model Line: X300 Ultra (X300U) Series - High-Output Tactical WeaponLights
- MPN/SKU Code: X300U-B-TN (X300 Ultra T-Slot Mount Tan Base SKU)
- UPC Code Profile: 084871324946
- Peak Light Output: 1,000 Lumens / 11,300 Candela Peak Beam Intensity
- Lens Technology: Custom Total Internal Reflection (TIR) Optical Lens
- Mounting System Style: T-Slot Thumb-Screw Rail Clamp System (Universal & Picatinny Keys Included)
- Switching Configuration: Ambidextrous Rear Momentary / Constant-On Toggle Switches
- Power Source Base: 2x CR123A 3V High-Energy Lithium Batteries (Included)
- Total Runtime Performance: 1.25 Hours Continuous Tactical Runtime
- Structural Material Base: Precision CNC-Machined Solid Aerospace Grade Billet Aluminum
- Exterior Finish Dressing: Mil-Spec Type III Hard-Coat Anodized Tan / Flat Dark Earth (FDE) Armor Finish
- Ingress Protection Rating: IPX7 Waterproof Standard (Submersible to 1 Meter for 30 Minutes)
- Full Kit Component Checklist: 1x X300U-B Light, 2x CR123A Batteries, Universal & Picatinny Rail Keys, Manual
- Packaging Format Class: Factory Original Sealed SureFire Retail Graphic Box Container
- Product Type Category: Weapon Accessories / Tactical Weapon-Mounted Handgun & Long Gun Lights
- Overall Unit Bezel Diameter: 1.125 Inches (~28.5 mm Bezel Width Axis)
- Overall Physical Length: 3.60 Inches (~91.4 mm Linear Rail Clearance Length)
- Net Mass (With Batteries): 4.00 Ounces (~113.4 Grams Complete Operational Weight)
- Global Quality Certifications: Built strictly to US Military and Law Enforcement Professional Duty Standards
- Warranty Tracking Protection: Fully Backed by SureFire No-Hassle Lifetime Guarantee
