This diagram taken from Browning’s instruction guide with the Auto 5 reveals the bronze friction piece as well as the friction ring. (Picture courtesy Browning). The Browning Auto 5 will still perform reliably without this adjustment, and apparently will truly perform with no bronze friction piece and friction ring mounted https://lorenzooercn.wikiexcerpt.com/3602738/the_best_side_of_where_to_buy_the_iwi_tavor