If what everyone is saying is true that lowers are copies of assault weapons and subject to the 7 day wait/background check, then having just the lower before 10/1 should constitute owning an assault weapon prior to 10/1.
They can't have their cake and eat it too.
They can't, but the scary part is they can try. Anyone they choose could be the test case ... even if you win in the end.
The end can be very far down the line, ask Mr. Woollard