Yes I agree about it being a Chinese made Thompson. Otherwise there would be some other Mfg info stamped on the right side of the receiver.
"Nationalist China acquired a quantity for use against Japanese land forces, and eventually began producing copies of the Thompson in small quantities for use by its armies and militias. In the 1930s, Taiyuan Arsenal produced copies of the Thompson for Yan Xishan, the warlord of Shanxi province."
It still is a great restore project. I would love to have one!!!!!!