I think the GAME is realist.
And few WEAPONS are unhistoric. (mkb 42 avt 40 pps42 etc)
With a mp 40 with silencer added the game will become more unhistoric...
I really dont understand the way you think.
Game has MANY unhistorical weapons/upgrades and a lot of weapons have incorrect popularity. Some of unhistorical things were added recently ( PPS42). But it doesnt matter, now the game is historic.
If they add 1 Historicall gun game becomes " semi-historic" ONLY BECAUSE I DONT LIKE IT.
you make my brain explode.