Centerfire Laser Series for the Smith & Wesson M&P Shield 9mmFeatures:- Red laser with constant beam- Custom designed to fit the Smith & Wesson M&P Shield 9mm pistol. - Tactial design that matches the style and contours of the gun.- Mounts to the frame without changing out parts or altering your weapon- Sits just under the bore for pinpoint accuracy- Ambidextrous activation for right and left-handed shooters - Distinct On/Off switch turns the laser on only when you need it- User installs in minutesSpecification- Weight: 0.5 oz- Wavelength: 650 nm (Red)- Power output: 5mW- Battery: 1/3 N Lithium (1)- Battery Life: Over 5 hours- Adjustment: Factory aligned at 10 yards, user adjustable for windage and elevation- Warranty: One year