Range from 5 to 30 rounds. Rounds.) Insert a 10 round.. Does this make it a different firearm?? You add the single shot rifle round adapter to it??

Range from 5 to 30 rounds. Rounds.) Insert a 10 round.. Does this make it a different firearm?? You add the single shot rifle round adapter to it?? Different gun, based just on the magazine capacity (now 1)?? The new barrel and calibre. The magazine in? How about registering only a receiver?? And! Whether or not a gun is a horrid "assault weapon"??