SureFire M600 Ultra Scout Ultra-High Output LED Weapon Light Construction High-strength aerospace aluminum with Mil-Spec anodizing, coated, tempered window Solid-state, recoil-proof LED generates 500 lumens of blinding white light and continues producing tactical-level light for 1.5 hours Momentary-on tape switch (7" cable) or a momentary/constant-on pushbutton switch Mounting system-Integral thumbscrew clamp for Picatinny rails Weatherproof O-ring and gasket sealed Construction High-strength aerospace aluminum with Mil-Spec anodizing, coated, tempered window