The term "assault rifle" is itself a fabrication of the gum control lobby. In reality, there is no such thing.
Instead the term is intended to instill fear and confusion among the populace.
The gun grabbers have intentionally conflated the design, capabilities and purposes of the AR-15 - the most popular and widely-owned rifle in America - with those of fully-automatic military grade weapons, which which, outside of their appearance and .223/5.56 NATO caliber, they share nothing in common.