The Sig Foxtrot 1 rail mounted flashlight will fit on picatinny rails and proprietary Sig rails. It has dual finger actuated tact switches for access with both the dominant and non-dominant hand. The ultra efficient white LED runs for over 2 hours at 200 lumens on a CR123 battery. It has 3 brightness settings of 100, 200 and 300 lumens. This tac-light is the perfect complement for home defense, law enforcement and military pistols.