Quick-detach flashlight module intended for use on railed pistols but will work on most accessory rails. Polymer housing with spring loaded switch, LED is good to illuminate out to 15m or so; runs on 3x LR44 button batteries (3 included). Rail-attach is a spring loaded bar to allow quick attach and removal as needed. This piece is modeled after the ubiquitous M3 tactical flashlight and as such there are holsters out there which can take pistols with the flashlight attached.