Without auto at the selector switch you do not have an assault weapon.
And again you are wrong on the law . . .
The legal definition of "assault weapon" has never included selective fire / full auto / burst fire. Those weapons are "machine guns" or "Assault Rifles".
The anti-gun activists counted on the public's ignorance of semi-auto vs full auto to garner support for an "Assault Weapons Ban".
"Assault weapons, just like armor-piercing bullets, machine guns, and plastic firearms are a new topic. Assault weapons' menacing looks, coupled with the public's confusion over fully-automatic machine guns versus semi-automatic assault weapons --anything that looks like a machine gun is assumed to be a machine gun-- can only increase the chance of public support for restrictions on these weapons."
Josh Sugarmann, 1988, founder, Violence Policy Center
Words have meanings and it is best if you don't add to the confusion.
So . . .
"Assault Rifle" is the name of a type of arm that
does exist and the characteristics that make the gun an "Assault Rifle" are not met by AR / AK and their civilian clones.
OTOH, "Assault Weapon" is an invented term that was intended to cultivate a response in the general population unfamiliar with the mechanical operation of firearms, specifically the difference between a semi-automatic AR-15 and a fully automatic Assault Rifle like the M-16.
Presently, under federal law the arm known as an "Assault Weapon" does not exist.
Under the 1994 law the criteria was if a semi-automatic rifle was able to accept detachable magazines and had two or more of the following components:
A) Folding or telescoping stock
B) Pistol grip
C) Bayonet mount
D) Flash suppressor, or threaded barrel designed to accommodate one
E) Grenade launcher (more precisely, a muzzle device which enables the launching or firing of rifle grenades, though this applies only to muzzle mounted grenade launchers and not those which are mounted externally)
Under the 1994 law this gun was an "Assault Weapon" because it had a detachable mag, pistol grip, bayonet lug and flash suppressor.
This gun is a "post ban" AR clone with detachable mag and pistol grip and was offered for sale legally under federal law for the 10 years the law was in effect.
The criteria that made a gun an "Assault Weapon" never had anything to do with rate of fire or any other aspect of the the basic mechanical operation of the firearm.