Viridian's E SERIES laser sight is specifically designed for the everyday conceal and carry owner. This model specific, trigger guard mounted, laser sight offers the most powerful red laser legally available, delivering rapid target acquisition when you need it most.Easy installation onto the trigger guard of your pistolAmbidextrous on/off button with 5 min auto shut off25 yard range in daylight and 1 mile at nightConstant laser with 6 + hours battery lifeEasy windage and elevation adjustmentFits the Glock 42/43.*Also fits the 43x and 48. (Does not fit the 43x MOS)