SureFire M Series Scout Light, LED WeaponLights with TIR Lens and Tumbscrew Mount

High-performance, recoil-proof LED with IntelliBeam Technology automatically and seamlessly adjusts light output from 15 to 600 lumens depending on environmental conditions Lengh: 5.8 inches, Bezel Diameter: 1.37 inches, Weight w/Batteries: 6 .2 oz. Tailcap click switch—partially press for momentary on, click for constant-on activation; patented lockout feature prevents accidental activation Construction: Mil-Spec hard-anodized aerospace aluminum, optically coated tempered window, O-ring and gasket seals Thumbscrew clamp securely attaches to any MIL-STD-1913 (Picatinny) rail