The 4x32 IR Contour Riflescope meets the hunter's demands by combining performance and innovation in a compact riflescope without sacrificing ruggedness, dependability and craftsmanship. This scope offers low magnification combined with long eye relief making it ideal for close range action, from cross-bow hunting to pistol shooting even down to simple rimfire action. This scope is engineered with extra rigid shockproof construction to handle the demands of pistols, shotguns and other types of high recoil firearms. This scope also features an IR Black, Red and Green Mil-Dot Reticle. Lockable external windage and elevation capabilities allow you to stay locked on target despite your firearms recoil. A built-in sun-shade is set back in the housing to allow the sun shade to cast a shadow and reduce glare for use in bright sun. Adjustment Knob: Adj. Rheostat, Windage and Elevation Adjustments. Tube Diameter: 1 Inch. Protected by a Limited Lifetime Warranty.