Laser Max LMS-RMSR Rail Mounted Laser (Red) For Ruger SR Series of Handguns Rail mounted laser for Ruger SRT22, SR9C SR40C Distinct ambidextrous activation switch Adjustable for wind age and Elevation 10 Minute Automatic Time-out; Class IIIa Laser Product: &lt;5mW power output Class 3R Laser Product (Does not exceed Class IIIA emission limits), &lt;5mW power output