Crimson Trace LS-250G Lasersaddle Mossberg 12/20 Gauge Laser Sight - Green - The LS-250G Lasersaddle is a feature-packed laser sighting solution for Mossberg 500, 590, & 590 Shockwave 12 Gauge & 20 Gauge Shotguns. Attaching seamlessly to the receiver, the LS-250G provides multiple ambidextrous laser activation pad points for instant targeting with a powerful 5mW green laser. As with all Crimson Trace laser sights, the LS-250G is user-adjustable for windage and elevation. The LS-250G features a Master On/Off Switch for completely powering down the system. This model provides 3 Hours of battery life with 4 provided CR2016 batteries. Fits Mossberg 500, 590 & 590 Shockwave in 12 Gauge & 20 Gauge only. Models must have receiver that is drilled and tapped. Does not fit .410 Bore. Green Laser Sight Adjustable Sight 3 Hours Of Battery Life Fits Mossberg 500, 590 And 590 Shockwave In 12 Gauge And 20 Gauge Only