Introducing the M50A1 Ontos, the "thing" that was rejected by the Army but loved by the Marines. With its distinctive six 106 mm recoilless rifles, the Ontos was designed as a tank destroyer but the Marines used it as a mobile gun platform. The Ontos was capable of firing its rifles one at a time, in pairs, or all at once. Because the lightweight Ontos could go where heavier tanks could not , it was highly effective in both jungle and urban fighting. Col. Stanley S. Hughes, the commander of the