The Mossberg 500 family of shotguns is perhaps one of the most popular and versatile American-made pump-action shotguns ever produced. Mossberg 500’s were made with a wide assortment of barrel and magazine lengths, finishes, stock shapes and accessories. This particular variant is constructed from a stainless steel frame to protect against the rapid corrosion caused by salt water air in marine environments. Like most other Mossberg 500s, it is a magazine-fed, manually operated (pump action) smoothbore gun.