This diagram taken from Browning’s instruction e-book for your Auto 5 demonstrates the bronze friction piece plus the friction ring. (Image courtesy Browning). The Browning Auto five will however work reliably without the need of this adjustment, and evidently will really perform with no bronze friction piece and friction ring https://troyypnbi.onesmablog.com/an-unbiased-view-of-where-to-buy-and-sell-the-winchester-canadian-centennial-30-30-rifle-75638789