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 Roger as a factory-equipped upgrade to the SR22, this product is also aftermarket compatible with Rugger SR22, SR9, and SR40 pistols. Features: - 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 specifications: - compatible with: Rugger SR22, SR40, SR9, SR40C, and SR9 compact - laser color: Red - battery type: 1/3N (included) - Battery life: 4 hours - output: 5Mw - weight: 1/2 oz - color: black.