I recall that Dillon used to sell a gizmo (maybe a whatchamacallit) that would stabilize the upper assembly of an AR15 for cleaning. It attached to the lower take-down pin and to the upper. This allows you to clamp the rifle in a cleaning jig or vise for cleaning. These devices are no longer in the Blue Press, and I'd like to know where to find one. In addition, does anyone know of a similar doo-hickey (maybe a gadget) to perform the same function for an FN-FAL type rifle? Thanks...