Shooting SuppliesSure FireSold by Fin Feather Fur Outfitters

Sure Fire

Surefire X300U UW Light With T-Slot MR Led With 2 CR123A Batteries

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

1000-lumen White

Light output from a high-performance

Tir Lens

Extended reach and surround light

Rated Runtime

Is 1.5 hours per set

High-strength Aerospace

Mil-Spec hard anodizing

O-ring Gasket

Sealed for weatherproof construction

$299.99
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SKU: X300U-B-084871324939

Overview

Built for railed handguns and long guns, this weapon light is designed to deliver a focused white beam with extended reach while still providing useful peripheral illumination. The integrated ambidextrous switch supports momentary or constant-on operation, and the Rail-Lock mounting system allows quick attachment and removal on Universal or Picatinny rails. Its aerospace aluminum body, Mil-Spec hard anodizing, and sealed construction are intended to handle hard use and weather exposure. For hunters and shooters who want a compact light for low-light identification and weapon-mounted control, it offers a practical, purpose-driven setup without unnecessary complexity.

Why Hunters Choose the Sure Fire

1000-lumen Led

Extended reach and surround light

Tir Lens

Supports close- to longer-range applications

Runs Up

To 1.5 hours per set

High-strength Aerospace

Mil-Spec hard anodizing

Weatherproof Design

O-ring and gasket sealing

Key Features

  • 1000-lumen white light output from a high-performance LED.
  • TIR lens produces a tight beam with extended reach and surround light.
  • Rated runtime is 1.5 hours per set of batteries.
  • High-strength aerospace aluminum body with Mil-Spec hard anodizing.
  • O-ring and gasket sealed for weatherproof construction.
  • Rail-Lock system attaches to pistols or long guns on Universal or Picatinny rails.
  • Ambidextrous push/toggle switch supports momentary or constant-on operation.

Best Used For

  • For hunters mounting a light on a pistol or long gun with Universal or Picatinny rails.
  • For low-light setup, navigation, or target identification when a focused beam is preferred.
  • For users wanting one-finger momentary or constant-on control from an ambidextrous switch.
  • For field use where weatherproof construction and sealed components are important.
  • For long-gun applications using an XT07 tape switch without changing grip position.

Specifications

Battery Count2
Battery TypeCR123A batteries
Beam TypeTight beam
Blade FinishMil-Spec hard anodized
Body MaterialHigh-strength aerospace aluminum
LedHigh-performance LED
Lens TypeTotal Internal Reflection (TIR) lens
Light TypeWeaponLight
Long Gun CompatibleYes
Lumens1000 lumens
Mount CompatibilityUniversal or Picatinny rails
Mounting SystemRail-Lock system
Operation ModesMomentary or constant-on
Optional AccessoriesDG grip switches; XT07 tape switch
Pistol CompatibleYes
Rail StandardMIL-STD 1913 rails
Runtime1.5 hours per set of batteries
SealedO-ring and gasket sealed
Switch TypeIntegral ambidextrous push/toggle switch
WeatherproofYes
WindowCoated, tempered window

Pros

  • 1000-lumen LED delivers a focused beam with extended reach and surround light
  • TIR lens supports close- to longer-range applications
  • Runs up to 1.5 hours per set of batteries
  • High-strength aerospace aluminum body with Mil-Spec hard anodizing
  • Weatherproof design with O-ring and gasket sealing
  • Rail-Lock system allows rapid attachment to pistols or long guns

Considerations & Trade-offs

  • The 1.5-hour runtime is stated per set of batteries, so extended use will require battery planning and spares.
  • The focused TIR beam is designed for close- to longer-range use, but it is not a broad flood light.
  • It is built for pistol and long-gun rail mounting, so it is not a universal light for non-railed setups.
  • Optional DG grip switches and an XT07 tape switch are mentioned separately, which may add setup complexity if you want remote activation.

Suggested Comparisons

  • Weapon-mounted tactical light
  • Pistol light
  • Long gun light
  • Rail-mounted weapon light

Suggested Accessories

  • Weapon light
  • Picatinny rail mount
  • Pressure switch
  • CR123A batteries

Frequently Asked Questions

What comes included with the SureFire X300U UW Light?

The product title states it includes 2 CR123A batteries. No other included accessories are listed in the provided data.

Can this light be mounted on both pistols and long guns?

Yes. The description says the Rail-Lock system allows rapid attachment to and removal from either Universal or Picatinny rails, and it notes the X300 Ultra can be attached to a pistol or a long gun.

How is the light operated?

It has an integral ambidextrous push/toggle switch for one-finger momentary or constant-on operation. The description also mentions optional DG grip switches for pistols and an XT07 tape switch for long guns.

Is the X300U UW weatherproof?

Yes. The long description says it is O-ring and gasket sealed to make it weatherproof.

What output and runtime are listed for this weapon light?

The provided description lists 1000 lumens and says it provides tactical-level light for 1.5 hours per set of batteries.