a game call having a box piece and a striker piece that contacts and vibrates an exposed edge of at least one box wall to produce sound . the box includes a bottom wall and a plurality of side and end walls that circumscribe an open - sided sound chamber . an appendage or striker pivot post projects from the box and supports a resilient assembly to bias the striker to the pivot post . the striker includes a slotted keyway having an aperture , a channel way and an adjoining recess that supports the pivotal movement of the striker . striker pieces constructed to various shapes and from a variety of materials and having one or more keyways or deformable retainer assemblies are shown that can be interchanged with the box piece to produce a variety of different sounds .