The unique, FOXTROT1X mounts to any Picatinny 1913, SIG SAUER proprietary, or Glock rails with no need for adapters or cross-slot modifications. Dual, finger-actuated tact switches support ambidextrous use while functioning in either continuous or momentary mode. The ultra-efficient white LED runs for over 1.5 hours at 450 lumens on a single CR123 battery. The rail-mounted light is ideal for home defense, law enforcement, or military applications and should fit most holsters designed for handgun lights. Compatible with all compact & full-size SIG SAUER pistols including: P320 Compact, XCOMPACT, XCARRY, XFIVE, Full-size, Carry (not Sub-Compact)M17, M18P226 & MK-25 (with accessory rail) P229 (with accessory rail) P220 (with accessory rail) SP2022 (with accessory rail) 1911 (with accessory rail) MCX, MPX, 516, 716, M400 with Picatinny rail. Does not fit: P365, P365X, or P365XLLIMA GRIP MODULES.