The SureFire X300U-B Ultra WeaponLight is a high-output tactical flashlight engineered for firearms with universal or Picatinny accessory rails. Featuring a powerful 1,000 lumens LED paired with a precision TIR lens, this weapon light produces a smooth, far-reaching beam that enhances target identification in low-light environments. Ambidextrous switching supports both momentary and constant-on activation for intuitive control. Built with aerospace-grade aluminum and a Mil-Spec hard-anodized finish, the X300U-B offers rugged durability, IPX7 water resistance, and shock-tolerant construction for reliable performance in demanding conditions.
Water Resistance: IPX7 water-resistant (1 m @ 30 min)
Shock Resistance: Recoil and impact resistant
Length: ~3.6 in (~9.1 cm)
Bezel Diameter: ~1.125 in (~2.9 cm)
Weight (with batteries): ~4 oz (~113 g)
Finish / Color: Black (Mil-Spec hard-anodized)
Available Colors:
Black
Tan (X300U-B-TN)
Country of Manufacture: USA
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Why Choose Xtreme Tactical
Discover what sets us apart from the competition
Premium Quality Products
We source only the highest quality tactical gear from trusted manufacturers
Expert Knowledge
Our team has years of experience in tactical equipment and training
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Safe shopping with secure payment processing and data protection
Fast Delivery
Quick dispatch and reliable shipping to get your gear to you fast
Customer Support
Dedicated support team ready to help with any questions or concerns
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Used and recommended by law enforcement and security professionals
What our customers say
Trusted by thousands of satisfied customers
“I’m very cautious about where I buy firearm accessories online. Xtreme Tactical delivered exactly what was advertised—100% authentic, brand-new, and on time. Highly recommended.”
Thomas Henry
Verified Customer
“I’ve ordered optics and accessories from Xtreme Tactical multiple times, and every experience has been flawless. Authentic products, fast shipping, and great communication. This is now my go-to tactical gear store.”
Jack Oliver
Verified Customer
“Xtreme Tactical carries exactly what serious shooters are looking for. The product descriptions are accurate, pricing is fair, and everything arrived factory sealed. You can tell they know their gear.”
Torch is great. Nice solid white spot produced and simple to use.
J
Joey Ng
Surefire X300U
Very good product, very good service. I love it.
J
Joey Ng
Surefire X300U
Very good product, very good service. I love it.
A
Abz
Excellent all around
I purchased the Surefire X300-UB tactical weapon light which would have otherwise been very difficult to source into the UK especially seeing as there’s so many counterfeit ones being sold on the internet. Ordering with xtremetactical was very simple and the communication was spot on. The item arrived super fast and is 100% genuine. I would definitely recommend shopping here for your gear.
A
Abz
Excellent all around
I purchased the Surefire X300-UB tactical weapon light which would have otherwise been very difficult to source into the UK especially seeing as there’s so many counterfeit ones being sold on the internet. Ordering with xtremetactical was very simple and the communication was spot on. The item arrived super fast and is 100% genuine. I would definitely recommend shopping here for your gear.
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Frequently asked questions
What is the return policy?
Our goal is for every customer to be totally satisfied with their purchase. If this isn’t the case, let us know and we’ll do our best to work with you to make it right. 14 day return if you are not happy. Things must be unopened and in original packaging, unless it is faulty.
Are any purchases final sale?
No, you can cancel at anytime and will receive a full refund. We will always work with you.
When will I get my order?
Shipping & Delivery
We work quickly to process and ship your order as soon as possible.
Once your order has shipped, you’ll receive an email with full tracking details.
Delivery Times
Standard delivery from our USA suppliers: approximately 10 business days (usually within a week)
UK Stock Collection items ship within 24 hours.
Stock & Sourcing
Due to limited demand, we do not hold inventory in the UK. All products ship direct from our USA suppliers to us then we ship to you so you don’t pay any imports fees.
Where are your products manufactured?
Our products are manufactured both in USA and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.
How much does shipping cost?
Shipping & Insurance
FREE Shipping on all orders. Shipping with Royal Mail Tracked and Special Delivery. All orders are insured.
Do your products include manufacturer warranties?
Yes. All eligible products are covered by the original manufacturer’s warranty, unless otherwise stated on the product page. Warranty terms vary by brand—please refer to the manufacturer’s official documentation for details. Xtreme Tactical is a retailer we do not cover warranty issues. We will help to facilitate any issues.
Reliable seller. Always good and rare stuff, unique products you can find only with him in England. As for product, not the best brand around (I like Trijicon and EoTech more) but the best in term of price&quality. As for this one Primary Arms SLx 3X MicroPrism Scope Green exactly - I would like to have co-witness feature mount for my iron sight, though could be obtained separately. Thank you.
Primary Arms SLx 3x MicroPrism Scope - Green ACSS Raptor 5.56/.308 Yard Reticle - Black
M.P.D.
Great little edc light
Perfect for the pocket, smaller and thinner than a king size sharpie with a max 800 lumens. Use it every day on a limited basis and I love the old style temporary on off button and hand tighten for permanent on. Neat little lanyard too. Slightly disappointed that I didn’t get a spare pair of batteries (which came with some earlier packaging) but still made up with it.
SureFire E2T-MV Tactician Dual-Output LED Flashlight
Kam Ming Yip
EOTech XPS2-0GRN HWS Holographic Weapon Sight
Very Good Custom service and the Green dot really clear and bright! 😍Thanks Xtreme Tactical!!! 🙏🏻🙏🏻
EOTech XPS2-0GRN HWS Holographic Weapon Sight
Yannick Housseau
Great red dot !
Feels solid and sturdy. Nothing fancy, just quality.
Eye relief is great and the the window is really wide, target acquisition is really fast !
