Chinoook 4x32 Tactical Rifle Scope Hunting Optics Crosshair Riflescope Gun Scope Magnification:4x;Objective Diameter: 1.26" (32mm); Eye Relief: 4.13" (105mm) Length: 7.48"(190mm); Inert gas purged, fog,shock, water proof With the fully coated optical glass, the rifle scope would give you a bright and high-contrast image. Made of high-strength aluminum alloy and with its one-piece tube construction, the scope is definitely for greater strength and durability.