The M18 is a 57mm shoulder-fired recoilless rifle which fires HEAT shells. It served as one of America's infantry anti-tank weapon alongside the Bazooka and Super Bazooka rocket launchers from late WW2 up until the end of the Korean War, though many NATO-aligned and third-world countries continue to use it. The M18 is incapable of penetrating medium, heavy and main battle tanks from the front, but a rear or flanking shot will be effective, and it can also propel large high-explosive shells at a considerable distance for its weight and size. The city-state of Sydney possesses a large number of M18s in store, and occasionally sells them away when it needs funds.