Patent attributes
An apparatus is provided for traversing a barrel of a gun and disposing at a select position therein. The apparatus includes a bore-rider assembly and a sight-mount assembly. The bore-rider assembly enters a muzzle of the barrel, slides within a bore of the barrel, and anchors to the select position. The sight-mount assembly projects a line-of-sight from the select position to the muzzle. The bore-rider assembly includes a rod having wedges, first and second bore-riders with proximal and distal ends, a sleeve couple that joins at axial ends the bore-riders in tandem from their proximal ends. Each bore-rider has a rim at the distal end and an extension at the proximal end. The rim has an outer diameter adjustable by expansion. The sleeve couple joins in tandem at each axial end each bore-rider from the proximal end. The rod passes through each bore-rider and the couple. The rod includes first and second wedges that engage their corresponding bore-riders. The rim includes an angularly symmetric plurality of slits therethrough. The slits continuously extend into the extension. The extension includes an axial chamber through which a spring passes through to provide tension for the rod. Cables extend fore and aft of the device and at a slit of the nearest bore-rider and loop around the corresponding extension.
