Brand: SIG Sauer STL-100-WPN
This modular rail mounted tactical lighting system provides added flexibility to use the light as either a hand held search light or a rail mounted tactical light on your rifle. It also gives you the choice of a frame-mounted switch or a pressure pad switch.
Simply unscrew the front of the light to move it to the flashlight frame or the rail-mount frame. Just as easily, you can select your preferred switch style by unscrewing the existing switch assembly and screwing on the other. Modular, flexible, and economical: this is a very handy accessory at an excellent price point!
The modular rail light uses one AA battery, not included. Output is measured at 120 lumens.