SureFire X400 Ultra Tactical WeaponLight with Green Laser
SureFire X400 Ultra Tactical WeaponLight with Green Laser
SureFire X400 Ultra Tactical WeaponLight with Green Laser

SureFire X400 Ultra Tactical WeaponLight with Green Laser

SKU #: SF-X400U-A-GN
MSRP: $799.00
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

  • Specifications:

  • 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
    2 Reviews
    100% (2)
    0% (0)
    0% (0)
    0% (0)
    0% (0)
    100% Recommend this product (2 of 2 responses)
    By Nick V
    San Diego
    March 13, 2015
    SureFire X400 Ultra - Finally Pulled The Trigger
    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.
    ProsVery well built and extremely strong laser. I can even see the length of the beam in the dark.
    ConsExpensive, but worth it!
    By Dan
    Central California
    July 18, 2014
    Sure Fire X400 ultra 500 Lu./ Green Laser Designator
    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.)
    12 Questions & 12 Answers
    from oakland gardens, NY asked:
    May 6, 2017
    can I mount this on an m-4 quad rail
    1 Answers
    Yes you can mount it to that rail.
    Customer Service
    on May 8, 2017

    from Texas asked:
    April 22, 2014
    Can you confirm that this product is actually in stock and waiting to ship? There's been a lot of delays in the release and a lot of other places have been disingenuous. Thanks.
    1 Answers
    Yes this item is in stock at this time but we do have a vary limited quantity and they can sell out quickly.
    Customer Service
    on April 23, 2014

    from Florida First Coast asked:
    March 16, 2014
    Will this unit fit the Glock 19 Gen 4 ?
    1 Answers
    Yes this should fit your weapon just fine with out any issues.
    Customer Service
    on March 17, 2014

    from SC asked:
    March 5, 2014
    If we pre-order this product now and then Surefire decides to raise the retail price upon release (for some reason or another), are we guaranteed the current Sale Price or will the final purchase price be automatically adjusted to reflect any change in MSRP?
    1 Answers
    if you were to pre-order this item the price would be locked in at its current price when ordered.
    Customer Service
    on March 6, 2014

    from TX asked:
    February 17, 2014
    The product description says there's between 4-6 days for it to ship. Is this is definite number or are the lead times still up in the air?
    1 Answers
    the lead times are still up in the air as of right now. i have notified our IT department about the lead times for this item but they have not adjusted the ETA quite yet.
    Customer Service
    on February 18, 2014

    JW Safranek
    from Texas asked:
    February 14, 2014
    Okay, it is past the end of January and early February, any genuine/accurate updates from SureFire, or is this item now permanently backordered (aka no chance of it ever being released)? 3 months from its official announcement is a bit odd for SureFire.
    1 Answers
    Unfortunately it appears that surefire has had some development problems with this weapon light and have not given a accurate release date yet as they have had to delay it again. gather that they are going to have an official release date "soon" as soon as we have access to this information we will be announcing it through our site.
    Customer Service
    on February 17, 2014

    from MA asked:
    January 8, 2014
    01/08/2014 Can you give us an update on the release of x400 u?
    1 Answers
    we have been working with the manufacture to locate an accurate release date but unfortunately surefire has had to delay this item once again. at this time we are looking towards the end of January to early February for the release of this item.
    Customer Service
    on January 9, 2014

    Brooks Adams
    from Tyler Texas asked:
    November 16, 2013
    Is this for a rifle platform or pistol or both ??
    1 Answers
    this light can be used on both pistol and long gun rails.
    Customer Service
    on November 18, 2013

    from Austin asked:
    November 14, 2013
    As of 11/15/13 is there any info on when the pre orders will ship?
    1 Answers
    at this time surefire has delayed the shipment of these weapon light and currently we are not expecting them now till the end of December due to these delays.
    Customer Service
    on November 15, 2013

    from Canada asked:
    August 31, 2013
    Is this shippable to Canada?
    1 Answers
    No we cannot ship Surefire out of the USA. Sorry!
    Customer Service
    on September 1, 2013

    jimmy johnson
    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
    1 Answers
    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.
    on July 30, 2013

    Jimmy Gatza
    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.
    1 Answers
    The Surefire X400 Weapon Lights will be available next month at the earliest.
    on February 12, 2013

    You May Also Like