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 Red 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 Green Sight counterparts. Features : E Series Red Laser Fits Taurus TX22 Ambidextrous on/off Constant Laser with 6+ Hours Battery Life Retail Box