 Beretta also saw the need for the gun to be protected from the elements so as to protect the gun in harsh hunting conditions such as water-fowl hunting, where salt spray can damage a gun within hours.Beretta's answer to this need was to coat the gun's working parts in a micro-thin membrane which completely protects the metal (which are not made from stainless steel, chromium, or aluminum) from corrosion while out in the field.Other improvements include an extra long barrel tang (the part of the barrel that fits into the receiver, and is actually behind the chamber) to more accurately fix the barrel to the receiver in order to increase accuracy when using slugs with a scope fixed to the receiver.