There's a Swedish variant, first made by Nagant in Belgium and later by Husqvarna in Sweden, in 7.5mm Swedish. It did not have the case-mouth-sealing cylinder, and the double action was reasonable for the time.
You've probably never heard of it.*
The workmanship was what you'd expect. Jewel-like. Exemplary. The grip fit usually had no gaps of any kind, including the inlet back strap. I bet there were two or three Japanese folks who saw these back in the day and either got really determined expressions, or went wan and later drowned themselves in the sea.
(*Photographed from a Canberra)