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SureFire Ultra LED Handgun or Long Gun WeaponLight with Laser, 500 Lumens, Pistol Grip/Long Gun Forend Switch, Green Laser

SKU: SFX400UAGN MFR: X400U-A-GN
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Key Features

  • Enhance accuracy with this weaponlight laser combo, perfect for handguns and long guns.
  • Experience a bright, 500-lumen beam for clear target identification in low light.
  • Durable SureFire construction ensures reliable performance, even under harsh conditions.
  • Quickly mount this laser sight on Picatinny or Universal rails for versatile use.
  • Enjoy 1.5 hours of tactical runtime, keeping your weapon light ready when you need it.
  • Green laser provides superior visibility, helping you aim with confidence and precision.
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Special Order?Estimated to Ship: 08/17/2025
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Review Summary

SureFire X400U-A Specifications

  • Fits

    Handguns and long guns with Picatinny or Universal rails

  • Max Output - White Light

    500 Lumens

  • Tactical Runtime

    1.5 hours

  • Max Output - Laser

    5.0 mW

  • Length

    3.6" / 9.14cm

  • Bezel Diameter

    1.125" / 2.85cm

  • Weight with Batteries

    4.9oz / 138.91g

  • UPC Code

    084871321198

About SureFire X400U-A

The SureFire Ultra LED WeaponLight with Green Laser is a robust and versatile tool designed for both handguns and long guns. This high-powered weapon light integrates a brilliant 500-lumen white-light illumination and a bright green laser aiming capability into a compact, rail-mountable package. It's an exceptionally effective solution for close- to medium-range engagements, making it ideal for law enforcement, military, and self-defense applications.

The high-performance LED generates a dazzling white light, focused by a Total Internal Reflection (TIR) lens. This design produces a concentrated beam with extended reach, along with significant surround light for enhanced peripheral vision. The Ultra WeaponLight delivers tactical-level light sufficient to overwhelm an aggressor's dark-adapted vision for up to 1.5 hours per battery set.

The 5-milliwatt laser sight, located below the primary light, emits a high-visibility green (505 nM) beam. This green laser is easier to see in low light conditions compared to a red laser, providing a distinct advantage. The laser's aiming adjustment mechanism uses recoil-resistant Nylok screws, ensuring it rarely needs re-zeroing.

Activation of the Ultra WeaponLight is conveniently achieved via ambidextrous switching located at the rear of the body, offering one-finger control. The switch allows for momentary-on activation, constant-on activation, and a separate switch at the rear enables you to control the white light illumination and laser sight independently or simultaneously.

Optional DG grip switches for pistols and a pressure-activated XT07 tape switch for long guns allow for activation without altering your grip on your weapon. The Ultra WeaponLight's Rail-Lock system permits rapid attachment/detachment from either Universal or Picatinny rails, adding to its versatility.

Constructed from high-strength aerospace aluminum, this durable weapon light is Mil-Spec hard anodized for superior toughness and corrosion resistance. It's also O-ring and gasket sealed to keep out dust and moisture, ensuring reliable performance in a variety of conditions.

SureFire X400U-A Features

  • Virtually indestructible 500-lumen LED regulated to maximize output and runtime
  • High-visibility 5 mW green laser sight
  • TIR lens for close- to medium-range applications
  • Quick-detach rail clamp with adapters for Picatinny and Universal rails
  • Accepts optional pistol grip and long gun forend switches
  • Construction: High-strength aerospace aluminum with Mil-Spec anodizing; impact-resistant polymer; coated tempered window
  • Weatherproof: O-ring and gasket sealed

Warranty Information

This product has a limited lifetime warranty.

Key Features

  • Enhance accuracy with this weaponlight laser combo, perfect for handguns and long guns.
  • Experience a bright, 500-lumen beam for clear target identification in low light.
  • Durable SureFire construction ensures reliable performance, even under harsh conditions.
  • Quickly mount this laser sight on Picatinny or Universal rails for versatile use.
  • Enjoy 1.5 hours of tactical runtime, keeping your weapon light ready when you need it.
  • Green laser provides superior visibility, helping you aim with confidence and precision.

What's in the box:

  • SureFire Ultra LED Handgun or Long Gun WeaponLight with Laser
  • 2 x 123A batteries
  • SureFire Warranty