1000 Lumen rail mount flashlight White LED technology, impervious to shock with a 50,000 hour lifetime; TIR optic produces a concentrated beam with optimum peripheral illumination Remote pressure switch features momentary and “constant on” operation PAllows the attachment of various 1913 Pica tinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined from mispec-anodized aluminum Beveled ends reduce snagging and eliminate sharp corners and edges