https://en.m.wikipedia.org/wiki/Mauser_1918_T-GewehrHow does this sound?
I really meant between the period between 1900-1939 before Riddler jumped on the Poles. The M1 Garand was in beta in 1928, but I don't think any prototype would be worth making as there isn't really much to differentiate old prototypes from the M1 product.
Lewis Gun
misread the title as wwii my badwhat about a parabellum?