The LS-250 Lasersaddle is a feature-packed laser sighting solution for Mossberg Shockwave, 500 and 590 shotguns. Attaching seamlessly to the receiver, the LS-250 provides multiple ambidextrous laser activation pad points for instant targeting with a powerful 5mW red laser. As with all Crimson Trace laser sights, the LS-250 is user-adjustable for windage and elevation. It features a master on/off switch for completely powering down the system. This model provides 3 Hours of battery life with two CR2032 batteries.*Note- Fits Mossberg 500, 590 & 590 Shockwave in 12 Gauge and 20 Gauge only. Models must have receiver that is drilled and tapped. Does not fit .410 Bore.