SureFire X400 Ultra Tactical WeaponLight with Green Laser

SKU #: SF-X400U-A-GN
MSRP: $790.00
SureFire X400 Ultra Tactical WeaponLight with Green LaserSureFire X400 Ultra Tactical WeaponLight with Green LaserSureFire X400 Ultra Tactical WeaponLight with Green LaserSureFire X400 Ultra Tactical WeaponLight with Green LaserSureFire X400 Ultra Tactical WeaponLight with Green Laser
The SureFire X400 Ultra WeaponLight integrates stunningly powerful white-light illumination and bright green laser aiming capabilities in one compact rail-mountable package, an extremely effective combination for close- to medium-range engagements in law enforcement, military, and self-defense applications.

A high-performance LED generates 500 lumens of brilliant white light that is focused by a Total Internal Reflection (TIR) lens to produce a tight beam with extended reach and significant surround light for peripheral vision. The X400 Ultra produces tactical-level light—enough to overwhelm an aggressor's dark-adapted vision—for 1.5 hours per set of batteries.

The X400 Ultra’s 5-milliwatt laser sight, located below the primary light, emits a high-visibility green (505 nM) beam. The laser's aiming adjustment mechanism uses Nylok® screws that won't back out from the effects of recoil, which means it rarely needs to be re-zeroed.

Activating the X400 Ultra is done via ambidextrous switching located at the rear of body, providing one-finger control — press the switch on either side for momentary-on activation, flip up or down for constant-on activation. A separate switch at the rear of the X400 Ultra allows you to (1) activate white light illumination only, (2) activate white light illumination simultaneously with the laser sight, (3) activate the laser sight only, or (4) disable the entire X400 Ultra. See illustration at upper left.

The versatile X400 Ultra can be attached to a pistol or a long gun since its Rail-Lock® system permits rapid attachment/detachment from either Universal or Picatinny rails. Its high-strength aerospace aluminum body is Mil-Spec hard anodized for superior toughness and corrosion resistance and is O-ring and gasket sealed to keep out dust and moisture.


  • 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
  • Includes high-energy 123A batteries with 10-year shelf life


  • Max Output: 500 Lumens
  • Runtime: 1.5 Hours
  • Laser Max Output: 5 mW
  • Length: 3.6"
  • Bezel Diameter: 1.125"
  • Weight w/ Batteries: 4.9 ounces
  • Batteries: 2 123A )included)
  • Reviews
    SureFire X400 Ultra Tactical WeaponLight with Green Laser
    5 Stars based on 2 Review(s)
    Nick V
    San Diego
    5 Stars
    I would recommend this item to a friend.

    SureFire X400 Ultra - Finally Pulled The Trigger
    March 13, 2015
    I have had my eye on the original X400 for years, and I finally decided to pull the trigger on this X400 Ultra with green laser. You can do your own research on green vs red laser. Based on the fact that this maybe the only handgun light I ever need, I decided to splurge and go with the green laser which is said to be brighter and easier on the eye than the red laser. I know many people may hesitate as I did as well and look at units that are half the price. But under extreme situations when you cannot afford to have your equipment fail, go with a reputable brand. You do get what you pay for and you do not want a "toy" on your gun.
    Very well built and extremely strong laser. I can even see the length of the beam in the dark.
    Expensive, but worth it!

    Central California
    5 Stars
    I would recommend this item to a friend.

    Sure Fire X400 ultra 500 Lu./ Green Laser Designator
    July 18, 2014
    High Price, Yes. High Quality, You bet. Does everything it advertises, Yes. The only problem was a previously purchased D.G. Switch for a specific H.K. Pistol. The S.F. X400 does not mount as far back on the rail as a S.F. X300. I will have to contact Sure Fire to obtain a solution. I have every confidence in S.F.'s Customer Service to come up with the answer, from previous contacts. Would I recommend this product to a friend? Absolutely! (Please do not include my full name or contact information. Retired L.E.)

    Ask a Question
    By jimmy johnson on July 30, 2013
    what would the date be for release there is no date on the previous question to know "when next month is"? thank yo
    on July 30, 2013

    Surefire has not yet announced a release date for this weapon light. We are not aware of when it will be available. We are sorry for any inconvenience.

    By Jimmy Gatza on February 12, 2013
    Just got my FNH FNX Tactical and I'm tricking it out. The is the light/laser I want. How soon will it be available. My trigger finger is itchy.
    on February 12, 2013

    The Surefire X400 Weapon Lights will be available next month at the earliest.

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