There a reason for weapons to fire fully automatically.
In looking for a source for defining what is and isn't an assault weapon, I would lean on the military, and not Wikipedia, for a definition. The characteristics you cite were written by (mostly left wing) politicians and have little to do with the lethality They counted bayonet lugs for example. When was the last mass bayoneting you heard about?
Since nearly all semi-automatic fire arms meet the criteria you cite, all semi-automatic weapons are subject to being banned by left wing radicals; a truly scary prospect in light of the left's efforts to de-fund and disarm police, leave criminals on the street, and leave law-abiding Americans relatively unarmed in the face well armed lawbreakers.