The Crimson Trace LaserSaddle LS-990G is a purpose-built green laser sighting solution for the Mossberg 990 Aftershock 12-gauge shotgun. Designed to attach seamlessly to the receiver, the LS-990G offers multiple ambidextrous activation pad points, allowing instant laser engagement from either side regardless of shooting position. The daylight-visible 5mW green laser — the brightest output permissible by law — is fully user-adjustable for windage and elevation, and a master on/off switch allows the unit to be completely powered down when not in use. The sturdy polymer housing mounts securely to the receiver with included screws and is compatible with aftermarket Picatinny rails for additional accessory options. Powered by two included CR2016 batteries with up to 2 hours of continuous runtime, and featuring an integrated battery and adjustment tool, the LS-990G is a practical and reliable aiming upgrade for the Mossberg 990 Aftershock platform. Also fits the Mossberg 940 12-gauge. Crimson Trace LaserSaddle LS990 5mW Green Laser Saddle for Mossberg 990 Aftershock 12g Receiver, Adjustable Windage/Elevation 1256959