SureFire X300U | Illuminate your target for a critical advantage.

• The SureFire X300 Ultra is a powerful weapon light, provides a bright 1,000-lumen beam with 11,300 candela, allowing you to clearly see and address any threat in low-light situations. Its key differentiator is the option between a quick-detach model (X300U-A) and a rock-solid fixed model (X300U-B).
• Powerful Illumination: A precision TIR lens shapes the 1,000-lumen, 11,300-candela output into a high-intensity beam with a bright center that reaches 213 meters (699 ft), helping you see farther and stay aware of your surroundings.
• Choice of Secure Mounting: Select the A-Model for rapid, tool-free attachment and removal, or the B-Model for a secure, semi-permanent fit that withstands heavy recoil and hard use.
• Intuitive One-Finger Control: Ambidextrous switches allow for instant activation of momentary-on or constant-on modes, so you can operate the light without changing your grip.
• Built for Extreme Conditions: Made from high-strength aerospace aluminum with a Mil-Spec hard-anodized finish, the X300 Ultra is waterproof (IPX7 rated) and tough enough for any mission.

SureFire X300 Ultra Review

X300 Ultra Light Features & Specifications

The SureFire X300 Ultra offers a significant tactical advantage in low-light conditions, enabling you to clearly identify and neutralize any threat. Its powerful 1,000-lumen beam, shaped by a precision TIR lens, delivers exceptional reach and significant peripheral illumination. The X300U SureFire stands apart by offering two distinct mounting systems—the rapid-release A-Model and the rock-solid B-Model—making it an essential and adaptable tool for law enforcement, military personnel, and civilians who demand absolute reliability and peak performance from their equipment.

X300U Light Key Features

• Intense 1,000-Lumen Output: Produces a far-reaching, high-intensity beam with 11,300 candela, allowing you to identify threats from a safe distance.
• Dual Mounting Systems: Choose between the quick-detach Lever Latch (X300U-A) for fast swapping between firearms or the secure T-slot thumbscrew (X300U-B) for a rock-solid, semi-permanent fit.
• Ambidextrous Switching: Intuitive, one-finger push/toggle switches allow for momentary-on or constant-on activation without altering your grip.
• Rugged Construction: Made from high-strength aerospace aluminum with a Mil-Spec hard-anodized finish for extreme durability and corrosion resistance.
• All-Weather Reliability: IPX7 waterproof rating ensures the light remains fully operational even when submerged in 1 meter of water for 30 minutes.

X300U Light Specifications

• High Output: 1,000 lumens
• Peak Beam Intensity: 11,300 candela
• Beam Distance: 213 meters (699 ft)
• Runtime: 1.25 hours
• Batteries: Two 123A lithium (included)
• Construction: Aerospace Aluminum
• Finish: Mil-Spec Hard Anodized
• Waterproofing: IPX7
• Weight (w/ Batteries): 4.1 oz (116 g)
• Bezel Diameter: 1.125 inches (2.9 cm)

What's in the box of the SureFire X300 U?

For Both X300U-A and X300U-B Models:

• • (1) X300 WeaponLight
  • (1) Battery Cover
  • (1) Battery Cover Retaining Pin
  • (2) 123A Lithium Batteries

Mounting Hardware Included:

• With the X300U-A (Lever Latch) Model:
  • (1) Universal Lever Latch (installed)
  • (1) Picatinny Lever Latch
  • (1) Spring (installed)
  • (1) Rail Latch Lock
  • (1) Universal Rail Latch
  • (1) Picatinny Rail Latch
  • (1) Lock Actuator
  • (1) Lock Actuator Screw
  • (1) 5/64-inch Hex Wrench
  • (1) Tube of Loctite 242
• With the X300U-B (T-Slot) Model:
  • (1) Picatinny Crossmember

SureFire X300 Ultra FAQs

What is the main difference between the X300U-A and X300U-B models? 

The only difference is the mounting system. The X300U-A uses a quick-release Lever Latch, which is great for swapping the light between firearms without tools. The X300U-B uses a T-slot thumbscrew clamp (Rail-Lock®) that provides a rock-solid, semi-permanent attachment for users who run a dedicated setup. All other performance features are identical.

Will the X300 Ultra fit my handgun? 

The Sure Fire X300 Ultra is designed to attach to most modern pistols with a Universal or Picatinny-style accessory rail. It includes the necessary hardware to ensure a secure fit on firearms from major manufacturers like Glock, Sig Sauer, Smith & Wesson, and many others. It also fits perfectly on Picatinny rails found on rifles and carbines.

How powerful is the beam? 

The SureFire X-300 U produces a 1000-lumen, high-intensity beam with 11,300 candela. This creates a blinding central spot that can reach over 200 meters (699 ft), allowing for positive target identification at long distances while also providing significant peripheral light to keep you aware of your surroundings.

What kind of batteries does the X300 Ultra use?

 It runs on two 123A lithium batteries, which are included in the box. This provides up to 1.25 hours of continuous runtime at its highest setting.

Is this light built to last? 

Absolutely. It's made from high-strength aerospace aluminum with a Mil-Spec hard-anodized finish, making it incredibly tough and resistant to recoil, impacts, and corrosion. With an IPX7 waterproof rating, it's a tool trusted by military and law enforcement professionals for its reliability in the harshest conditions.

Surefire X300U for sale? 

When you're ready to purchase a SureFire X300U, we recommend ordering directly from Atomic Defense. This ensures you receive a 100% authentic, factory-new product and not a counterfeit. At Atomic Defense, we provide dedicated customer support to help you choose the right model, answer any questions, and guarantee you get a reliable tool backed by our commitment to quality and service.