according to the feinstein definition, which i'm assuming that you are inquiring about.. they are.

Threaded barrel

Pistol grip, thumbhole stock or similar where the web of the thumb is below the top of the trigger

Collapsible or folding stock

There are different laws depending on different states at present, but these are the proposed legislation that she is intending to implement in the new law.

For instance, currently bayonet lug is considered one characteristic.. but that's not in the new law as far as i could see when i read it.