Construct a game-ready model of a double-barreled shotgun in a classic pump-action design. Blend the industrial decay of Lethal Company with the vintage aesthetics of Buckshot Roulette, incorporating realistic weathering, rust, and detailed hardsurface textures that evoke a long history of combat. The design should feature balanced proportions with standard-length barrels and a robust, functional stock, emphasizing durability and a battle-worn look