Create a 3D model of the "Iron Wraith," a gas-powered diesel-punk assault rifle. The design should feature a sturdy, industrial look with a polished dark metal body, brass accents, and a wooden stock. Include a ribbed barrel with an integrated suppressor, visible gas mechanisms, a folding stock, and a large box magazine. Add intricate details like engravings, exposed gears, and vintage-style sights. Aim for a realistic, worn aesthetic that captures the essence of diesel-punk.