B.E.S.T. (Benelli Surface Treatment) is a new proprietary finishing technology developed by engineers and scientists at Benelli's manufacturing headquarters in Urbino Italy. This coating protects steel with a tough, impenetrable armor that stops rust and corrosion. Multi-Layered Surface Diamond-like carbon particles are used to create a multi-layered surface coating that protects against the elements and abrasions. Tested Against the Elements A competitor's barrel showing the damage from 48 hours of saltwater exposure. A Benelli BE.S.T-treated barrel with no sign of rust or corrosion after 3 months of saltwater exposure. Impenetrable Armor Mfg: Benelli U.S.A.