I prefer the M3 Grease Gun from USA
https://en.wikipedia.org/wiki/M3_submachine_gun
M3 Grease Gun is an American .45-caliber submachine gun that was adopted by the U.S. Army in 1942, primarily used during World War II and later conflicts. It was designed as a cheaper and lighter alternative to the Thompson submachine gun, earning its nickname due to its resemblance to a mechanic's tool.