An Underwood M1 Carbine, excellent. After serving in the South Pacific, in WW2, my Dad worked at "The Underwood" prepping surplus carbines for Korea. He told me the rifles were hung on a steel, round clothesline and his job was to blast the cosmo-caked M1s with a steam cleaner rod. I always remembered this because he told me that just about every guy working at the factory had served in WW2 and it was one of the worst jobs he'd ever had.