Bluing is a common finishing technique used on shotgun barrels to protect them from rust and corrosion, as well as to enhance their appearance. The process involves applying a blue-black finish to the metal surface of the barrel, which not only provides a sleek and polished look but also helps to increase the durability and longevity of the firearm. Understanding the process of how bluing is installed on shotgun barrels can help gun owners maintain the quality and appearance of their firearms.
