Steve, as mentioned above, read the link above and it should answer all of your questions. But I'll give you the quick answer. There are 14 imported parts on the Norinco Model 320 (the thumbhole stock does not have a pistol grip as stated in the ATF parts letter - that's why you need to add 5 parts when adding a separate pistol grip and fixed stock). This will bring the imported parts count down to 10. *Remember*, it does not matter how many USA made parts are added to the rifle. It matters how many imported parts (as stated on ATF's list) are left remaining on the rifle.
Dan