This diagram taken from Browning’s instruction e-book for that Auto 5 demonstrates the bronze friction piece and also the friction ring. (Photo courtesy Browning). The Browning Auto 5 will still function reliably without having this adjustment, and apparently will basically operate without the bronze friction piece and friction ring set https://messiahsixma.wikievia.com/10470399/american_tactical_omni_hybrid_maxx_pistol_w_an_overview