Commissioned by Sturm Ruger as an upgrade to the SR line of pistols, the LMS-RMSR provides a decisive targeting advantage in low light. This clever design offers superior integration with the sleek lines of the pistol frame and an integral Picatinny rail for the attachment of a tactical light. Advanced programming enables the operator to select from a steady or pulsed beam option for superior visibility and faster target identification. Offered by Ruger as a factory-equipped upgrade to the SR22, this product is also aftermarket compatible with Ruger SR22, SR9, and SR40 pistols. Bright red laser is fully adjustable for windage and elevation Integral rail allows for attachment of lights and other accessories Easily programmable for steady or pulsed beam Distinct ambidextrous ON/OFF switch reinforces safe firearm handling Automatic time-out feature prevents inadvertent battery drain