2nd amendment doesn't cover destructive devices though.
That may change. It all depends on how far certain groups want to take that overturning of the NYC nunchuk ban. I'm sure a good enough legal team could spin that ruling into a very convincing argument that any weapons ban, even those for destructive devices, is unconstitutional. We could see an overturning of the NFA as well, which would make a lot of gun owners very, very happy. Doing so would pretty much take all power away from the ATF, and us gun owners hate the ATF about as much as Democrats hate ICE right now.