Originally Posted by Mister Donut
I imagine this is quite a stupid question, and that's why I hope I won't get so many tomatos thrown at me in this section.
Well you are right in that regard..
being able to swap out parts to make it a AS gun and being able to swap back does not alter the condition of the AR-15 in question being a restricted firearm.
It would still fall under all the restrictions of the firearms mode when in AS mode.