This is a VISM Tactical LED Weapon Light. With Integral Green Laser Aiming Dot. This item fits Full Size GLOCK G17 G34 G20 G21 G22 Pistol. Model: Tactical LED Light With Integral Green Laser Dot Sight. Made from Durable Aluminum Material. Tactical Anodized Matte Black Color. Flashlight Projects a Bright White light. Integral Laser Projects a bright Red Aiming Dot On The Target. Flashlight Specs: 3W Ultra Bright 200 Lumen Reliable CREE® LED Light Source. Laser is Adjustable for Windage and Elevation. Green Laser Specs: 532nm, Max output. This Combo Light/Laser Unit is Designed to handle shock and recoil. Fits various FULL SIZE pistols with a Factory Picatinny spec Accessory rail. Also fits Rifles/Shotguns with a Picatinny spec Accessory rail. Does NOT fit any SUB-COMPACT pistols. Note this is a Powerful FULL-SIZE Light and on compact size pistols (Glock 19,19x, 23 and others) it will stick out past the barrel. Electronic Control Buttons are completely Ambidextrous there are four button on each side of the Flashlight and Laser body. There is a Flashlight Momentary button on top, Flashlight Constant On/Off button on the bottom. The Middle button turns the Laser On/Off, and the Flashlight Strobe button is at the front. Momentary & Constant On/Off buttons are positioned and angled ergonomically. They are accessible from your Trigger Finger or your support hand thumb when gripping the pistol. Slides onto most Weaver / Picatinny Pistol accessory spec rails. Dimensions: 3.4L x 1.5W x 1.3H. Weight: 3.8 oz. Uses 1 each CR123A Battery (Included). This item is brand new.