um well last time i checked they said you can only import them if they are under 300fps i think and they have some licence as well but the guns are $400
Dude they couldnt be BB guns.. They would be full on air rifles at $400. And I'm guessing you would need an arms licence to purchase one..
It would have to be legit, cause if you can know about it so freely, so can authorities, and I doubt they would just ignore something as serious as illegal firearms, or a non-legit shooting range