Surefire X300U-B Weaponlight 1000 lumen LED, BLACK or TAN.


Surefire X300U-B weaponlight LED 1000 Lumens, 2x 123A
  • High-performance LED
  • Ambidextrous switches
  • Attaches securely to both Universal and Picatinny accessory rails
  • Accepts DG and XT remote switches
(5 customer reviews)

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Surefire, X300U-B Weaponlight.
LED 1000 Lumens, 2x 123A,
  • High-performance LED
  • Ambidextrous switches
  • Attaches securely to both Universal and Picatinny accessory rails
  • Accepts DG and XT remote switches
This newly enhanced version of the best-selling SureFire X300 Ultra now delivers a stunning 1,000 lumens of LED-generated output focused by a precision TIR lens, creating a far-reaching high-intensity beam – with a larger center spot – that offers the power to positively identify threats at significant distances while temporarily impairing an adversary’s vision. This intense beam also provides extensive peripheral illumination for maintaining situational awareness. The rugged X300 Ultra with its T-slot thumbscrew clamp – attaches securely to the Universal and Picatinny rails (fitting more models than ever before) found on most handguns. As always for this best-in-class model, it features integral one- finger ambidextrous momentary- and constant-on switching and can be equipped with SureFire’s optional DG handgun grip switch. This versatile Weapon Light also attaches to the Picatinny rails on long guns – more securely than ever before and can be activated via an optional XT remote switch that gives you precision control of the light while letting you maintain a proper grip on your weapon.

NOTICE REGARDING BROKEN HINGE HOOKS on BATTERY COVERS/SWITCH CAPS for  X300 Series Surefire lights:   We inspect each light to ensure that the hinge hooks aren’t broken prior to shipping it out.  And considering how well-protected the light is in the factory package, and how shielded the hinge hooks are on the top rear of the light, it’s unlikely that they can possibly get broken in transit to you.    If you find that the hooks on your light are broken, it’s must likely due to user-error,  e.g. after opening the cover to remove the battery shield, it is forced closed with the hooks not fully engaged on the metal cross-pin.    We (BORESIGHT SOLUTIONS) will no longer provide battery door replacements.  If your battery door hinges are broken, you must contact Surefire to arrange replacement.   

Additional information


Black, Tan

5 reviews for Surefire X300U-B Weaponlight 1000 lumen LED, BLACK or TAN.

  1. Weston Harper (verified owner)

    Borsight, had a fair price, super fast shipping, same day I ordered it was in the mail. I enjoy the light, solid mount. Light seems plenty bright creates a wall of bright white light. Just what I wanted.

  2. danvanbilderbeek (verified owner)

    Unfortunately it has been a pretty bad experience with my Surefire X300u-B, but I blame the manufacturer. The battery cap does not close no matter how many times I try to press it against the latch, and the pivot pin that holds the battery cap’s arms got bent as I tried closing it. Not the SureFire experience I read about. Contacted Surefire and they are sending me replacement parts otherwise I have to send it in for repair. I guess I was the lucky one to get a defective unit. In any case, Ben from Boresight was prompt and I received my shipment quickly.

  3. John Bridges (verified owner)

    Thanks for having this light in stock. You can never go wrong with Surefire, the gold standard in lights. I ordered and Ben Simonson delivered. I got the tan version of the X300. I was hesitant due to the color because of my OCD but whatever. Black was out of stock at the time but tan was all there was and to be honest the color grew on me. It’s attached to my Glock 17 Gen 5. I’ll be ordered more lights from Ben. Thanks for the Skittles by the way Ben! Lol.

  4. Dustin Hughes (verified owner)

    Ordered Surefire X300U-B. I have ordered from Boresight Solutions in the past, but failed to leave a review. The package was shipped securely the next day and arrived quickly with tracking provided. The product was also competitively priced. Thanks again!

  5. kalenkelly22 (verified owner)

    Great product. The light is very bright and makes target identification very easy. The customer service is very good. The lines of communication were open from the time I bought the flashlight until it arrived at my door. Actually, they are still open to make sure my experience was a good one. I would recommend Boresight Solutions to anyone that wants a good product and good customer service!

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