Submachine guns such as the M3 grease gun and the Thompson served our military troops well in World War II and Korea. Fast forward M4 carbines have been the main service weapons. Recently, the U.S. Army have decided to contract the Swiss defense contractor (Brugger and Thomet) $2.5 million dollars for the new APC9K submachine gun. There are 350 guns in the books as purchased with options to another thousand. The U.S. Army have been looking for something to replace the Heckler & Koch 9mm MP5. Decisions was based on arming certain personnel that would needed something more small and...