All this says, is that the stock is one of the permissable components to change. When it gets to the pistol grip, it's listed as N/A. WTF?!~ That's the biggest part used today! Want a folding stock? Replace your grip with this this cheap US-made one and you're legal.  This needs a lot of review before it's taken cut and dry. What you don't understand is that the only parts which COUNT are the IMPORTED parts - i.e. the foreign-made parts which originally came on the weapon. You can have  NO MORE THAN 10 IMPORTED PARTS  on your weapon. The SKS is has never been imported with a pistol grip - all the pistol gripped SKSes are using domestically produced pistol grips. So - any pistol grip ON your SKS is going to be a US-made one already. If you're replacing a US made grip with a US made grip, it doesn't affect your imported parts count one bit.    Take a couple of steps back and read up on 922(r) until you understand it. Don't get all butt-hurt here - you honestly don't understand 922(r) at this point and need to do some more reading.