Introducing the Revolutionary BEnelli Surface Treatment! Benelli knows that hunting can take you to some very unforgiving environments that wreak havoc on metals, so they developed BE.S.T. technology to protect your shotgun with a rugged coating to put an end to corrosion and rust. BE.S.T. is applied in an environmentally friendly, high-vacuum, radio-frequency plasma technology that bonds the diamond-derived Benelli BE.S.T. surface treatment to the metal components. In fact, it's so effective, Benelli warranties treated parts against corrosion and rust for 25 years.