American G.I.'s brought home metric tons of souvenir sidearms from WWI and WWII. To this day there's a constant circulation of Mausers and Walthers and Nambus and whatnot on the American market, circulating in eddies from sock drawer to gun show table and back to sock drawer again. They had to have grabbed every handgun that wasn't nailed down between Omaha Beach and the Elbe.
Which just now got me to wondering, what about all the handguns from the Elbe to the Bug? Private Ivan had to have been every bit the souvenir-hunting klepto as any other unsupervised young soldier, and in the massive official organized looting of Germany that went down, who's gonna notice a PPK or two missing? So where did all that stuff go?