Yes, this is what's called a "Montenegrin revolver"; after the king of Montenegro (part of the former Yugoslavia) declared that every male subject had to own a revolver chambered for the standard handgun cartridge of his army, pretty well every arms manufacturer in Europe that had any spare capacity started making these as fast as they could. Most of these were made in Belgium, but you can also see French or German examples. They're usually chambered for an obsolete 11.3x36mmR (about .44") cartridge, but some manufacturers carried the design over into other chamberings. In any event, they're not very strong, not very recent, and probably not the sort of thing that should be fired today anyway.