post-apocalyptic setting, detailed rusty Gauss minigun, modified weapon design, intricate mechanical parts, glowing energy cells, heavy barrel, spinning barrels action, worn metal textures, scavenged materials, makeshift modifications, leather straps, exposed wiring, tactical flashlight attachment, camo paint, urban ruins background, scattered bullet casings, dim ambient light, 3/4 view, concept art style, detailed shadows, steel and copper materials, sparks effect, grunge aesthetic.