The SureFire M900V White/IR LED Vertical Foregrip WeaponLight, Throw-lever Mount attaches by means of an integral throw-lever clamp to long guns equipped with a Picatinny rail on the underside of the forend. The M900V White/IR LED Vertical Foregrip Weapon-Light by SureFire utilizes one sealed LED unit to produce both brilliant white light and invisible infrared radiation for use with night vision devices. The white beam of this weapon flashlight produces a brilliant beam configured for close- to medium-range applications. Primary beam output is 125 lumens for one-hour of runtime using an MN10 lamp assembly (included) or 225 lumens for 20 minutes using an MN11 lamp assembly (included). The SureFire M900V White/IR LED Vertical Foregrip Weapon Light has four primary beam switches: two momentary-on pressure pads to activate the main light (one on each side for ambidextrous operation), a constant-on rotary switch for the main light and a system-disable switch that locks all lights in the OFF position to prevent accidental activation during covert operations, transport, or storage. The SureFire WeaponLight has navigation lights that are operated by a momentary-on pressure pad thumb switch. The optional KT4 conversion kit replaces the standard 1.62" diameter head with a 2.5" diameter head that produces a more focused, extended-range beam.