Hitch-Hiker ADI/ACI Mounts The Hitch-Hiker is a rigid, ultra-rugged mount that attaches an ADI/ACI to your scope. This mount takes up little room on the scope tube and allows an ADI/ACI to be easily viewed from just about any shooting position. Since it attaches directly to the scope tube it can easily be removed along with the scope if QD scope mounts are used. A must have for any long range shooter.