Crimson Trace LS990 LaserSaddle LS990 Mossberg 990/940 Green Dot Green 1214592. Built to complement the platform?s tactical configuration it adds a fast consistent aiming reference with multiple ambidextrous activation pad locations for instant engagement. The 5mW green laser is user-adjustable for windage and elevation to dial in point of aim. A Master On/Off switch allows the unit to be completely powered down when desired. Specifications for Crimson Trace LS990 LaserSaddle LS990: Manufacturer: Crimson Trace Color: Green Black Features of Crimson Trace LS990 LaserSaddle LS990: Fits The Mossberg 990 Aftershock Series And Mossberg 940 12 Gauge Integrated Battery/Windage/Elevation Adjustment Tool Daylight Visible 5mW Green Laser Emitter (Brightest Allowable By Law) Sturdy Polymer Body Attaches With Included Screws Compatible With Aftermarket Pic Rails 2 Hour Battery Life (Constant ON) With Externally Replaceable CR2016 Batteries (Included) Ambidextrous Activation Button Package Contents: Crimson Trace LS990 LaserSaddle LS990