CISNO 2in 1 Tactical Flashlight Red Laser Sight Combo With Pressure Switch For Pistol Rifle Picatinny Weaver Rail Pressure switch for instant activation of laser sight and/or flashlight Easy switch between different modes - flashlight only, laser only, flashlight & laser Quick release mounting latch mounts the flashlight securely and allows speedy installation and removal of the flashlight Integrated mount for standard 20mm picatinny / weaver rail Lightweight design, 20mm standard rail suit for most of pistol and rifle guns. 650nm red laser sight is fully adjustable for windage and elevation with included allen wrench