Viridians 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.

Features :

• Fits Ruger 57
• 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