Fully automatic weapons, short barreled rifles and shotguns (barrels under 16" for rifles and under 18" for shotguns), anything with a bore larger than .50" (with the exception of arms specifically granted an exemption), fixed magazine shotguns capable of holding more than 10 rounds, any handgun with a forward grip attached, any firearm disguised as some other object.
Long guns, yes. Handguns and NFA items, no.
If it's an NFA tax stamped device or firearm, yes. If it's a typical Title I firearm (your 'everyday' sort of gun), no.
Ordinary rifles, shotguns, and handguns, no. NFA regulated items are automatically registered upon purchase.
No, unless it's an NFA tax stamped firearm (short barreled rifles, full auto weapons, etc.)
Yes and No. They are illegal unless you get a approval from ATF. Silencers are considered a "title II" weapon or NFA type weapon (read below). All NFA items must be registered with the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF). Private owners wishing to purchase an NFA item must obtain permission from the ATF, obtain a signature from the county sheriff or city or town chief of police (not necessarily permission), pass an extensive background check to include submitting a photograph and finger prints, fully register the firearm, receive ATF written permission before moving the firearm across state lines, and pay a tax. The request to transfer ownership of an NFA item is made on an ATF Form 4.
There is no gun registration in Kentucky, except in instances of NFA firearms (short barreled rifles, full auto firearms, suppressors, AOWs, etc.). If you don't have a firearm which falls into the Title II NFA category, there's nothing to register.
It would be classed as a destructive device, not a firearm.
No, it is not.
No.
in 1965 the NFA joined with FFA
It is possible to be approved for an NFA Class III tax stamp which will permit you to buy a transferable full auto firearm in Florida.
If it uses gunpowder to launch a projectile it is considered a firearm