This airsoft gun is being sold As-Is, untested. I received this recently from a friend and have never had it powered up or test fired. It could shoot fine and function ok as-is, or it may need some work (don’t have gas to test). The gun is a rare vintage classic though from the late 1980's. This gun would be powered externally via a rear gas line. I believe this is supposed to use R134A gas instead of modern HPA. Gun is non-blowback. It has full auto and semi auto firing modes. These have crazy high rate of fire! The gun originally came with a standard 60 round magazine, but it is missing (no magazine included). The rear stock folding action does still “work”, but both side pins are missing and would be needed to use as intended (see pics). Some scratches/scuffs seen throughout from use. The rear sight sidewalls have damage. The faux charging handle also is partly chipped. Even though this gun has flaws, it is overall a solid built gun for what it is and its age. It is made of heavy duty (durable) plastic, and has full metal rear stock, metal entire top receiver piece, metal magazine release button & fire selector switch, and metal swivel sling mount. Gun would be great to restore, use for needed parts, as a cool wall hanger display piece, or even for a prop reenactment.