Trust The Standard. Popular with law enforcement and military operators around the world, the Rail-Lock version Surefire’s best-selling WeaponLight now delivers a stunning 1,000 lumens of LED-generated output. Focused by a precision TIR lens, it creates a far-reaching high-intensity beam with a larger center spot that is extremely effective combination for close- to medium-range engagements. You can count on the X300U-A to help you positively identify threats at significant. It also provides extensive peripheral illumination for maintaining situational awareness. Ambidextrous switching provides one-finger control of momentary-on or constant-on activation. Its rugged, aerospace aluminum body is Mil-Spec hard anodized for scratch and corrosion resistance and sealed to make it weatherproof. It’s also IPX7 waterproof to 1 meter for 30 minutes.The X300U-A delivers a standard of excellence you can trust.