I have a older Costa Messa AR180 semi auto rifle - its missing the part that holds the safety casting in - the Clip and toggle on the right side of the receiver. Anyone know where I can buy these parts ? Numrich and the like don't seem to get them anymore. I guess I would also be interested in any other spare parts too for it ! Besides that this rifle appears almost unfired - my uncle had it in his closet sense the 70's after VN. Thanks