【0.96 in Installation Space Needed】TWO Installation requirements of the 3-in-1 green laser light: 
 (1) 21MM Picatinny with slot; 
 (2) 0.96 inch Installation Space from slot to trigger guard. 【Safe & Adjustable Laser Sight】Solofish Green and blue laser sight compatible for glock pistol compatible for taurus g2c accessories. The safety output of the tactical red green laser beam is class: IIIA, <5mW. In order to protect the threads of pistol light laser, please slowly tune Elevation and Windage interactively. Only one direction may damage the the threads. 【Multiple Tactical Modes】 gun lasers light combo offers Steady/Strobe Gun light modes. Working modes: Steady/Strobe gun light, Pistol laser Only, Steady/Strobe Flashlight+ Gun Laser. 【Rechargeable Built-in Battery】The handgun lights compatible with gun parts & airsoft accessories, it is powered by a built-in rechargeable battery. A full charge takes 1.5 hours by USB cable and providing 5hrs’ laser for gun, 1hrs tactical flashlight or 45 minutes gun light and laser sights. Power indicator light：Red light/Charging or low battery; Green light/ full charging. 【Aluminum Alloy Design】The pistol flashlight laser combo is made of Aluminum alloy, which is light weight and ultra compact. Dimension: L1.45”*W1.09”*H1.45”; Weight: 69g(2.43 oz).