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. Fits Ruger Max 9 – Easy installation onto the trigger guard of your pistol – Ambidextrous on/off button with 5 min auto shut off – 25-yard range in daylight and 1 mile at night – Constant laser with 6 + hours battery life – Easy windage and elevation adjustment. Manufacturing defects vary by individual Brands. We will give instructions as what is to be done on a case by case basis.