Trust The Gatekeeper. The M300V is the gatekeeper in our line of multi-spectrum Scout Lights. Powered by a single 123A lithium battery, it produces 250 lumens of brilliant white light or 100 mW of invisible infrared illumination for use with night vision devices — with no need for IR filters or spare lamps. To switch between white light, disable, and infrared modes you simply twist the front knurled portion of the bezel. In either mode, the M300V’s TIR lens produces a tight beam suited for close- to medium-range applications. The M300V comes with a momentary/constant-on push-button tailcap switch. It clamps solidly to any rifle equipped with a Picatinny rail via its integral M75 thumbscrew mount. Constructed of high-strength aerospace aluminum with Mil-Spec hard anodizing for superior toughness and corrosion resistance, it’s a battle-proven design, built to withstand the rigors of combat.