The Exact Scope System is all solid machined out of one piece. We slotted this scope to maximize your vertical travel if you are shooting longer distances. All of the scope levels are machined into a one piece cradle that allows you to do your 3rd axis leveling. Made in USA. Exact Scope features: Patent pendingNew Lens retention systemNew steel blade pin design4 pin positions3rd axis level adjustmentProprietary slotted mount adjustment design to maximize vertical travelAccepts 1 5/8? lensTapped for light1' of fiber for exceptional pin brightnessAssortment of colored bands included B3 Vented Scope Housing LH EXCT-SCVT-LH