Soviets made PPSh-41s by cutting Mosin Nagant rifle barrels in half, to get two PPSh barrels. Mosin stocks were used for some early PPSh stocks.
Mosin Nagant tomato stakes are still pretty cheap, and the chrome barrel means that even if they are pretty stinky looking on the outside.
PPSh-41s are some heavy beasties.
Ii cant imagine how heavy with a 72 round drum.
PPS 43’s are still pretty cheap, but I hear that production run is about to end.
http://centerfiresystems.com/pps43-pis.aspx