Konus 7172: Dry nitrogen filled for waterproof fog proof and shockproof performance - Fully multi-coated optics - Engraved and dual-illuminated Mil-Dot reticle - Locking tactical turrets that are resettable to zero - Fast focus eyepiece - Illuminated level bubble - Reversible mount fits weaver picatinny and 3/8 dovetail mounting rails - The Konus Pro AS34 has been constructed with quick target acquiring properties. Thus speed and accuracy have both been enhanced whether at the range or in Close Quarter Battle (CQB) situations. A beffy outer diameter of 34mm can withstand the most extreme conditions. An integrated tri-rail accepts all your accessories. Completely waterproof with a dual illuminated etched mil-dot reticle for low light shooting and a wide angle field of view for fast moving targets. The included base will mount on weaver or picatinny rails as well as a 3/8 dovetail rail.