The Nikon Monarch III XR Turret Rifle Scope - 4-16x42mm has been designed around an optical system that was created to give shooters increased versatility and superlative performance. This Hunting Rifle Scope from Nikon letsimage you tailor your choice of riflescope to virtually any type of rifle, in any caliber and in any imaginable hunting situation. The Nikon Monarch 3 Multicoated Waterproof Riflescope is made with Spring-Loaded Instant Zero-Reset Turrets that allows you to sight-in as usual, then lift the spring-loaded adjustment knob, rotate to your "zero", and re-engage. This Nikon Riflescope's new Spot On™ custom turret technology allows you to order customized turrets that are calibrated to match bullet drop for virtually any factory or custom handload. Engineered for minimum weight and maximum strength and durability the Nikon 4-16x42mm Monarch 3 Rifle Scope, builds these scopes from aircraft grade aluminum alloy to withstand the toughest conditions.