Cool Forgotten Weapons Merch! http://shop.bbtv.com/collections/forgotten-weapons
Robert F Hudson developed a series of machine guns for the US Navy during the 1920s and 1930s, including this .30 caliber example as well as .50 caliber and 1.1 inch versions. What makes these guns unusual is both the attempted use of a counter-balanced system to eliminate felt recoil and also the standard use of suppressors on the guns. I don’t know much else about the guns, but you can find the documentation mentioned in the video here:
At Forgotten Weapons I think the most interesting guns out there are the most obscure ones. I try to search out experimental and prototype weapons and show you how they work, in addition to more conventional guns that you may not have heard of before. You’re much more likely to find a video on the Cei Rigotti or Webley-Fosbery here than an AR or Glock. So, do you want to learn about something new today? Then stick around!