There then arose an urgent demand for a light and simple weapon capable of a high volume of fire, and the answer to this was the PPSh-41, designed by Georgii Shpagin.
I believe this is a WWII German designate MP717(r) 9mm conversion of a Russian PPSh-41. 1951 ("01" in a circle) 1945: Polish: Hungarian ("11" in a circle)
The PPSh-41 was one of the two captured SMGs that were considered to be modified for 9 mm x 19 ammunition and Finnish magazines around 1942 - 1943, but that project didn't go beyond prototype-stage, as SMG M/44 production was seen as better alternative.
PPSh 41 Russian WWII Machinegun: A rare HUDSON Toy Company replica of this classic WWII rifle of the Russian Army. It is constructed entirely of metal with real wood stock.
The two biggest problems have been the nature of the construction of the PPSh-41 subguns they started with and the fact that they used a lightly loaded Chinese 7.62X25 round in their versions' development.
9mm Conversion of the PPSh-41 The Germans in WWII took captured PPShs and converted them by inserting a 9mm barrel and a magazine adapter to accept MP 38 and 40 magazines. No modifications to the bolt face was necessary.
This has been reproduced from "The Official PPSh-41 Submachine Gun Manual" translated by Major James F. Gebhardt, U.S. Army (Retired) Chapter VI LOADING the DRUM MAGAZINE. To load the drum magazine, one must: 1.
It was a maximally simplified all-metal version famous PPSh-41, with a receiver group of rectangular shape (most convenient for cold pressing). The automation of this prototype also worked according to the principle of the blowback bolt.
BGS (out of business) PPSh-41 mag well adapter for 9mm STen magazines. Includes adapter and STen magazine, a 9mm barrel not included. $85 usd, plus shipping, for both adapter and magazine.