A gun grip controller includes a rod-shaped controller body having a trigger-shaped lever and a steering dial or the like, for controlling a model car or the like, and a grip provided to protrude from the controller body. The grip is arranged so as to be rotatably attached to the controller body and also adapted so as to allow an occupation of both a protrusive position where the grip protrudes from the controller body in a direction crossing the longitudinal direction of the controller body, and a folded position where the grip is folded along the longitudinal direction of the controller body and adjacent to the outside of the controller body. Therefore, it is possible for the controller to occupy a compact configuration for packing and carrying purposes, in spite of its "gun-grip" configuration.