Est. 2014 | USA Small Business

SureFire X300U-B WeaponLight | 1,000 Lumens
FREE Delivery & Lifetime Warranty
☑️ Ships for FREE from Texas*
Ships today or next day on most orders that are "In Stock". Some orders that are custom or large may take extra time to prepare.
- Free shipping is 3-10 days and requires a purchase of $70 or more, or choose a faster method at checkout. Be sure to account for the 0-2 days it will take us to pack and ship an order, in addition to the shipping speed you choose.
- All orders ship as soon as possible. We don't like waiting and you probably don't either.
- If there are delays: (Only if delays are in green, above, do we expect them), just know that we are on your side. If you're waiting, we're waiting for you, plus hundreds and sometimes thousands of others to finish being made.
- Shipping times are estimations. Items that are custom, delayed, rejected, or affected by other acts of god will take additional time.
☑️ Why shop with Atomic Defense?
- Highly-rated 4.8/5 star service with 1200+ reviews, and counting!
- Secure transaction guaranteed. AES-256 Military Encryption.
- USA Family-Owned Small Business.
- BBB A+ Rated and Accredited.
- Open Monday to Friday. 9:00 AM to 4:00 PM Pacific.
- Lifetime Warranty.
- Free Shipping on orders over $70 inside the USA.
- Easy Returns and Exchanges.
- Our support doesn't end after the sale. We're here whenever you need us.
Need 10+ of these? Request a quote here:
Fill out the form for 10+ units by clicking here. (Total order must be $5,000 USD or more in value.)
CAGE: 9FAL3
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Address: 2491 Alluvial Ave. Clovis, CA 93611
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Return & Exchange policy:
- Summary: Don't take those sweet Instagram pics and then try to return a used item. Must be within 30 days of delivery.
- Exchanges: Realized you need a different item? That's ok! Exchanges and returns are incredibly easy.
- We are a Small Business: We do the most we can to help with return costs, but we are not Amazon and cannot take hits or losses like Amazon.
- Wrong Items: Mistakes rarely happen. Atomic Defense takes pictures of orders before they are packaged and shipped. We pay for return, recertification, and exchange shipping costs if we ever make a mistake on your orders.
- Rules for Returns: We will deduct refurbishing costs, plus materials and labor, of used products or modified products - or decline the return. This includes, but is not limited to; products with residue, smells, scratches, missing parts, debris, dents and damage. **We reserve the right to refuse returns. Refused returns shipping cost back to the buyer are not covered by Atomic Defense.
- Packaging: Ensure returns are packaged safely with thick padding on all six sides. Failure to correctly package returns may damage products and cost will be deducted from Buyer's account or return refused.
- Bulletproof products: No one else accepts returns on ballistic items. We do.** However, recertification X-Ray costs on returned ballistic items is 20%.
- Starting a return/exchange: Click here
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SureFire X300U-B WeaponLight: High-Performance Durability with 1,000 Lumens of Tactical Precision
- Unmatched Performance: Delivers a powerful 1,000 lumens of focused, high-intensity LED-generated light, paired with a custom TIR lens for optimal beam quality.
- Reliable in Any Situation: Designed with a precision aluminum body that’s Mil-Spec hard anodized, ensuring durability, scratch resistance, and corrosion resistance for long-term use.
- Weatherproof and Tough: IPX7-rated waterproof protection lets you operate confidently in wet or challenging conditions.
- Effortless Control: Ambidextrous momentary-on and constant-on switching allows fast, reliable activation without compromising your grip.
- Versatile Fit: Securely attaches to Universal and Picatinny rails, making it compatible with most handguns and adaptable to your needs.
- Enhanced Awareness: Provides exceptional peripheral illumination to maintain situational awareness, while the intense central beam allows for confident threat identification at significant distances.
- Tactical Advantage: Offers optional pressure-activated remote switches for maximum control in any tactical situation.
- American Excellence: Proudly designed and built in the USA, ensuring quality and reliability trusted by professionals worldwide.
SureFire X300U-B WeaponLight Review
What are some common accessories to add to the SureFire X300U-B WeaponLight?
- DG Remote Switches: Pressure-activated switches designed for precision control while maintaining grip, ideal for tactical scenarios.
- XT Tape Switches: Remote switches that allow seamless activation on long guns without compromising handling.
- Colored Lens Filters: Optional filters to change the beam color for various applications, such as preserving night vision or signaling.
- Rail Mount Adapters: Additional accessories to ensure a secure and customized fit on various firearms.
- Holsters: Specially designed holsters compatible with the SureFire X300U-B, allowing for convenient carry and quick access.
SureFire X300U-B WeaponLight Features and Specs
The SureFire X300U-B WeaponLight is a durable, high-performance tactical light designed to meet the demands of military, law enforcement, and personal defense. It delivers 1,000 lumens of powerful LED illumination, enhanced by a precision TIR lens for optimal beam distance and coverage. Built with a rugged aerospace aluminum body and tested for weatherproofing and waterproofing to IPX7 standards, it’s suitable for challenging environments. The ambidextrous activation and secure attachment options ensure reliability and versatility across a wide range of firearms. This WeaponLight combines cutting-edge technology with dependable construction, making it a gold standard in its category.

Key Features
- Produces an ultra-bright output of 1,000 lumens using a high-performance LED.
- Custom TIR lens offers a precise beam optimized for close- to medium-range use.
- Ambidextrous activation allows easy momentary- or constant-on use.
- Compatible with Universal and Picatinny accessory rails on various handguns.
- Rugged Mil-Spec hard-anodized aerospace aluminum construction for extreme durability.
- Waterproof up to 1 meter for 30 minutes (IPX7 rated).
- Supports optional DG and XT remote switches for hands-free operation.
- Lightweight design at just 4.1 oz, including batteries.
- Runs on two 123A lithium batteries with 1.25 hours of runtime.
- Designed and built in the USA to high-quality standards.
What's in the box of the SureFire X300U-B WeaponLight?
- (1) SureFire X300U-B WeaponLight
- (2) 123A Lithium Batteries
- (1) T-Slot Thumbscrew Clamp
- (1) Instruction Manual
- (1) Warranty Registration Card
SureFire X300U-B WeaponLight FAQs
What is the light output of the SureFire X300U-B Ultra-High-Output LED Handgun WeaponLight?
The X300U-B generates an impressive 1,000 lumens of LED light, providing exceptional illumination for close- to medium-range engagements.
How does the SureFire X300-B Ultra LED Weapon Light attach to my firearm?
The X300U-B uses a T-slot thumbscrew clamp that securely attaches to both Universal and Picatinny accessory rails, making it compatible with most handgun models.
Is the SureFire X300U-B Ultra LED Handgun or Long Gun WeaponLight with T-Slot Mount waterproof?
Yes, the X300U-B is IPX7 rated, which means it is waterproof to a depth of 1 meter for up to 30 minutes.
What kind of batteries does the Surefire X300U-B 1000 Lumen Weapon Light use, and how long do they last?
The X300U-B runs on two 123A batteries (included) and provides a runtime of approximately 1.25 hours on high output.
Can the SureFire X300U-B Ultra Handgun Weapon Light with Thumbscrew - 1000 Lumens be used with remote switches?
Absolutely. The X300U-B accepts optional pressure-activated DG and XT remote switches, allowing for precision control without impacting your grip on the weapon.
Is the SureFire X300 Ultra X300U-B High Output 1000 Lumen LED Weapon Light durable?
Yes, the X300U-B is constructed from high-strength aerospace aluminum with a Mil-Spec hard anodized finish, making it highly resistant to scratches, corrosion, and tough environmental conditions.
Does the SureFire X300U-B SureFire X300UB Handgun Weaponlight support ambidextrous operation?
Yes, the X300U-B features ambidextrous push/toggle switches for easy one-finger control of both momentary-on and constant-on activation.
What is the beam distance of the SureFire X300U-B Ultra Weapon Light?
The X300U-B has a beam distance of up to 213 meters, ensuring clear visibility in a variety of situations.
Where is the Surefire X300U-B Weaponlight 1000-lumen LED manufactured?
The X300U-B, like all SureFire products, is designed and built in the USA with high-quality materials and craftsmanship.