Correct! I keep forgetting about AWs as I have no use for them, so they're not on my radar.
"Assault weapon" is a changing term, that was defined by California law one way, then federal law another way, and now a few states and localities in different ways.
The term changes to include different types of firearms, and a current definition may not be the definition of legislation in 5-20 years.
If they declare all semi-autos were "assault weapons" or in some proposed legislation that any firearm that has ever been adopted for use by a federal agency or the military, or a firearm based on such a weapon is an "assault weapon" the definition grows. (HR 1022)
Most firearms reliable or modular firearms are based on something that at one time was a military rifle or inspired from such a design. Most common firearms have at one point been adopted by a federal LEO agency, even including revolvers or pump guns.
If legislation declares all semi-auto rifles ever adopted by a LEO agency, then all that is needed to add a rifle is the ATF or another agency official adopts it for a minor role, and it is banned.
Other legislation could declare all "sniper" platforms, or firearms similar to such platforms are "assault weapons". Bringing bolt actions into the definition.
In California any weapon, even a single shot chambered in .50 BMG is handled the same as an "assault weapon" by law.
So maybe some calibers alone begin to turn weapons into "assault weapons".
A pistol with a threaded barrel in California is an "assault weapon".
"Assault weapon" is not a real term. It is a legal term that has a different definition in different parts of the nation and the definition changes with new legislation.
It is a term that evokes emotional response. A term people think they have defined in thier minds, but changes at the whim of legislators.
So it is an effective term repeatedly used by gun banners and slowly applied to a more and more types of firearms.