The Aimsports Scout offers a long eye relief scope that compensates for parallax. With the greater operating distances of our 312x model this feature sets us apart from the crowd. These scopes are meant to be mounted forward of the rifle action or on top of a pistol slide or revolver frame. The scope is nitrogen charged sealed fog proof and shockresistant. Capped finger adjustable windage and elevation knobs and AOAdjustable Objective lens system for parallax fine tuning.