The LS-870 Lasersaddle is a feature-packed laser sighting solution for Remington 870 and Tac-14 shotguns in 12 gauge only. Attaching seamlessly to the receiver, the LS-870 provides an ambidextrous laser activation pad for instant targeting with a powerful 5mW red or green laser. As with all Crimson Trace laser sights, the LS-870 is user-adjustable for windage and elevation. The LS-870 features a Master On/Off Switch for completely powering down the system. This model provides 3 Hours of battery life with two provided CR2032 or 4 CR2016 batteries. Does not fit 20 gauge or .410 Bore.