Abstract: A piston grip including a body formed at least partially from elastomeric material and having two side portions to be received at opposite sides of a revolver handle, and a cross strap portion connected permanently to the side portions at rear edges thereof to extend across the back of the pistol handle. The side portions may have flanges projecting inwardly from their forward edges to be received in front of the piston handle. Relatively stiff reinforcing elements are provided in the side portions of the body, and flexible reinforcing fabric or other material is provided in the cross strap portion.