Technically that's true. But then you would have to give up the ability to accept normal mags.
There were 5 evil features that defined an Assault Weapon:
1) ability to accept "hi-cap" mags
2) pistol grip
3) threaded muzzle
4) bayo lug
5) suppressor
To be legal the gun could have no more than two of those features. The ability to accept standard mags was a given. That left you with one feature...usually the pistol grip. By far the most common configuration was a rifle that would accept standard mags, pistol grip, plain muzzle (later the "muzzle brake" that was permanently pinned or welded came along...that eliminated the threaded barrel feature and still resembled the military style flash suppressor) and fixed or permanently pinned, non-collapsible, collapsible stock (pinned fully open).
It was also illegal to convert a newly made assault rifle (made after the ban) into a "pre-ban" configured rifle.
So the ban did nothing to change, or "ban", the firearm. In reality it banned flash suppressors, bayonet lugs, collapsible stocks and mags over 10 rounds for civilian sales.
DiFi had a litter of kittens when she (and other democrats) figured out nothing really changed for the gun makers. They just adapted to the new rules. Democrats accused the gun industry of finding loopholes and circumventing the law. No, dipshit, they followed the letter of the law just like you wrote it. Wasn't their fault you're an idiot.
ETA: Just noticed the post above by Wolfshoon. Could've saved a lot of time if I'd read that first because he pretty covered everything I just said.
Then 2004 came along and everything magically went back to normal in most places. A few states kept the ban in effect. Then the guns and mags marked "for LE/Mil use only" instantly became "rare" and "collector items". It was just stupidity.