Hey, always learning someting new. Never heard of that PPD-34 before. That thing looks like a FrankenSMG. Shares something with a MP-18, a Beretta 38 and a Reising. Super cool. About the reliability, can't say too much. Time to do a little research.
And thanks Flippy for the insight on the Suomi. Very much appreciated.
Now, FHMax, if you allow me, you are the official gravedigger in the community. I mean, you are really digging old and obscure stuff in this tread. Hope you don't mind the comment.
Best regards,
batistadk