You are wrong. Any semi-auto rifle with a factory barrel less than 18.5" is restricted.
Back before the AR was listed as a restricted rifle, there were very few short barreled ARs because nobody wanted a restricted AR. When the lieberals changed the laws, an unintended consequence was that suddenly there was no barrier to owing shorty ARs and so that market exploded.
Today, if the AR were to be reclassed, there would be thousands of nearly worthless short AR barrels and uppers out there as people tried to dump them to render their ARs non-restricted.
Yes and no, you'd open a very grey area of law as Uppers are not controlled you'd have to register your lower as either restricted or not registered at all. It would be a similar affair to what exists in the states for simplicities sake at minimum it would make sense to reduce barrel length needed for non restricted to 16" to match the laws.




















































