Viridian’s E-Series line is specifically designed for everyday concealed carry and is available for the top brands and handguns on the market. The E-Series Green Laser Sights will easily mount to the trigger guard and feature an ambidextrous on/off button with a 5-minute auto shut off just like their Red Sight counterparts. Fits Ruger Max 9 – Easy installation onto the trigger guard of your pistol – Ambidextrous on/off button with 5 min auto shut off – 100-yard range in daylight and 2 miles at night – Constant laser with 60 min 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.