Hogue Le Grip, Fits Colt Government, Black Finish, with Finger Grooves, Laser Enhanced, Batteries Included 45080 Ruggedized 4mw laser diode to withstand recoil" 630-670 nm<5mw class 3R red laser" Windage and elevation screws for fine adjustment" Internal programmable micro-processor for flashing" stealth target or steady modes with 3 levels of brightness operated by pressing Hogue logo and pressure pad activation buttons" Battery change without laser sight readjustment" Hogue's famed orthopedic hand-shape with proportioned finger grooves position the hand naturally" Cobblestone(TM) texture provides an efficient" non-slip" non-irritating stippling pattern