This is a fine example of a WWII German MP-40, fully functional, fully automatic submachine gun produced by the ERMA factory in Germany in 1941. They used many wartime stampings combined with limited machined parts to reduce manufacturing time and reduce cost. The original MP40 SMGs were all primarily produced by three factories: ERMA Werke, Haenel and Steyr. These were typically called a "Schmeisser", however that was incorrect as they are actually a "Machine Pistole" which derives from the Germans use of "MP" in their model number of MP-40. The rear receiver end cap of this example is stamped with: "MP40/ayf 43" over "4671m/COS". The side of the receiver tube, and on several locations it is stamped with a "WaA44" Waffenamt proof. It has matching numbers (usually 671) on the left side of the barrel, underside of the barrel nut, bolt, receiver tube, folding stock assembly, rear sight, trigger housing and firing pin assembly, with some having an appropriate German Waffenamt proof. It has the traditional dark brown bakelite grips and the dark red lower receiver cover. This MP-40 is complete with two 30 round stick magazines, both are marked MP-38/40. This wonderful SMG is accompanied by a signed documented from the original WWII vet stating that while serving in the 513th Parachute Regiment of the 17th Airborne, he acquire this weapon during the invasion of Germany in early 1945. It is also noted that this weapon has been reactivated, which appears to have been limited to only removing a plug that was welded inside the chamber of the barrel.