SureFire X400VH Weaponlight w/infrared laser serves as the interface for the MasterFire holster system for almost any pistol with a tactical rail. Features quick deployment and instant-on light activation, an ideal combination in a low-light, high-stress situation; V-Series head, which provides both white-light and infrared illumination, plus an integral Class 1 infrared laser aiming device; 350 lumens of visible, tactical-level light or 120 mW of IR illumination for use with NVGs; cam-slotted bezel and rear locking lugs on battery housing interface with MasterFire holster for secure weapon retention. Quick-Detach rail clamp provides fast, secure attachment to Universal and Picatinny MIL-STD-1913 rails for use on handguns and long guns.