I see a 1941 date on receiver, but the sight appears to be of the M27, which I thought was produced only until 1940. The crossover M27/30 should have the same rear sight of the M39. But I'll see what more I can dig up on it. I've certainly not seen them all. The straight stock is also making me think it's a M27 or M27/30. Perhaps the former had some later production than I've seen.