Surefire X300 Ultra B LED Light

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Complete The Look

The Surefire X300 Ultra B Light features a rugged, aerospace aluminum body that is Mil-Spec hard anodized for scratch and corrosion resistance and sealed to make it weatherproof. This light delivers a stunning 1,000 lumens of LED-generated output with a TIR Lens to create a far-reaching high-intensity beam with a larger center spot that is ideal for close- to medium-range engagements. Positively identify threats at significant distances while temporarily impairing your adversary’s vision while also having a provided extensive peripheral illumination for maintaining situational awareness. The ambidextrous switching provides one-finger control of momentary-on or constant-on activation. 


  • Special high-performance LED produces 1,000 lumens
  • Custom TIR lens creates smooth, far-reaching light with a larger center spot beam that's highly effective for close- to medium-range engagements
  • Integral ambidextrous momentary- and constant-on switching provides easy, instant activation
  • Attaches securely to both Universal and Picatinny accessory rails, fitting a wide variety of handgun models
  • IPX7 waterproof to 1 meter for 30 minutes
  • High-strength aerospace aluminum body is Mil-Spec hard anodized for extreme durability
  • Accepts optional pressure-activated DG and XT remote switches for precision control without altering grip on weapon


  • Max Output: 1,000 Lumens
  • Runtime: 1.5 Hours
  • Length: 3.6 inches
  • Bezel Diameter: 1.125 inches
  • Weight w/ Batteries: 4 ounces
  • Batteries: 2 123A (included)
  • Surefire item # X300U-B
  • Surefire SKU 084871324939

NOTE - This is the "B" version of the X300 Ultra which means it has a T-Slot Mounting Rail system.  The Surefire X300 Ultra "A" models has the Rail-Lock Mounting System.