La réponse que j'ai reçu de dillon because of the diameter of the 500 s&w case, you not only need the caliber conversion kit, which does not include the two parts you mentioned, but you will also need a magnum rifle conversion(11069) which has a completely casefeed body assembly, magnum case feed tube and casefeed funnel asembly. That part sells for us $101.38 plus shipping