Don't get too married to the banned and exempted lists. There is still the list of items on the gun, and if they go to the one item plan our Ruger 10/22's will be banned (detachable magazine)

Other items over looked by many are the meanings of the items on the "bad gun component" list.
Barrel Shroud: A part that protects the shooters hand from the heat of the barrel during sustained fire. Sounds like a forestock to me
Pistol Grip: A pronounced grip protruding from the stock. Have you looked at the styles of stocks for rifles and shotguns and their names? Have you looked at a basic pistol grip shotgun or rifle stock and noticed how the grip area swells out from the main stock and protrudes down from the line of the bottom of the stock?
There are others in there. I don't know if these anti's are so ignorant that they are writing this blindly, or if they are doing it with help and hoping we won't catch it until after they start enforcement.