"It starts to get complicated if you want automatic weapons, but even that can be done."
I think automatic weapons are illegal here in the US, but I'm not sure (not being a gun person).
Not at all. It just requires a fair bit of beareaucratic "hoop jumping" to get a Class 3 permit which allows the posessor to have such goodies as automatic weapons, silencers, etc... Difficult at times, but not impossible to obtain...
the infowarrior