This is a Streamlight Tac Light w/laser known as the TLR-6, model 69290.
Designed to securely attach to both the rail and trigger guard of standard and compact railed handguns. Using this low-profile weapon light with laser allows for easier identification of potential threats before taking action.
C4 LED light 100 lumens
Fits 3rd & 4th gen G17,19,21,22 3rd gen G30, 31 4th gen G20, 23, 29, 35