This 5mw red laser made of anodized aircraft grade aluminum is designed to me mounted to the rail system of most rifles or pistols.It is excellent for quick target acquisition and is adjustable for windage and elevation.It includes a continuous on/off end cap and momentary on/off wire pressure switch.It is 2.25" long and works in 35f-90f temperatures.Power Switch: On/Off and Pressure PadWavelength: 635/655 nmDot Size: N/APower: 5mWRange: 500 ydsWeight: 1.40 ozBattery: LR44Laser Color: RedFirearm Fit: Universal w/Accessory RailAdjustments: Windage & ElevationFinish: BlackMount Type: Picatinny/Weaver