The Flamer is a heavy weapon with a bulky, industrial design, featuring a large fuel tank mounted on the back and a broad, nozzle-like barrel for projecting flames. Its body is primarily constructed from weathered metal with visible rust and scratches, showcasing its post-apocalyptic origins. The weapon includes a hand pump mechanism and a trigger assembly, both with a retro-futuristic aesthetic, and the fuel tank has a pressure gauge and warning labels for a touch of realism.