Abstract: The invention an apparatus including a shaft member having a first end. The apparatus also includes a sleeve member having a first opening and an inner surface defining a cavity. The shaft member is slidably received in the first opening. The first end moves along a path extending in the cavity. The apparatus also includes at least one deformable member extending radially inwardly from the inner surface. The apparatus also includes an impact member associated with the first end. The impact member deforms the at least one deformable member during movement of the first end along the path to absorb energy associated with movement of the shaft member.