Rifles, shotguns and handguns differ mostly on the type of cartridge used.
As written your question is rather confusing. Please rewrite, repost, we'll try to get you an answer.
not shotguns, but yes to the others
Rifles, shotguns, handguns, machine guns. Mainly rifles and shotguns.
Rifles, shotguns and handguns.
Rifles, shotguns, handguns
18 for rifles and shotguns, 21 for handguns and NFA items (short barreled rifles/shotguns, machine guns, destructive devices, etc.), the same as it is for the entire United States under federal law.
Rifles, shotguns, handguns
Rossi! They also produce handguns and rifles.
Rifles, shotguns, handguns, machine guns.
Rifles, shotguns, handguns, machine guns.
Rifles have bolt actions and I've never seen a bolt action on a shotgun or handgun