I am not up on the most current Russian gun laws. Could be restrictions for sale in Russia.Was that done to ship here to certain states? This came directly from the Motherland so it's kinda weird to me.
They are not allowed to own handguns, for example, and absolutely no suppressors.
Edit: I have not been hanging out on Guns.ru as much as I used to, after I remarried, so 2nd hole is an educated guess.