The Crimson Trace LaserSaddle Laser Sight is a feature-packed laser sighting solution for Remington 870 and Tac-14 12 Gauge Shotguns. Attaching seamlessly to the receiver, the Crimson Trace LaserSaddle Laser Sight provides multiple ambidextrous laser activation pad points for instant targeting with a powerful 5mW laser. As with all Crimson Trace laser sights, the LaserSaddle Laser Sight is user-adjustable for windage and elevation. It features a master on/off switch for completely powering down the system. The red laser model LS-870 provides 3 hours of battery life with two provided CR2032 batteries, while the green laser model LS-870G provides 3 hours of battery life with four provided CR2016 batteries.