I am in no way legally or otherwise qualified to give advice on this subject. Just wanted to share what i have acquired on the subject, and share a nifty site that has little checklists and links to letters from the wonderful batf on said subject. Gunwiki: Generic 922(r) Worksheet (who I am sure are not legally qualified in any way either) I do believe the original intent was to apply to manufacturers. Somewhere along the line it was decided that when you started modding your firearms, you were somehow manufacturing a different weapon. then you have those who do home builds. While there is a lot of semantics involved, i would not want to be the one having to argue them in court (like I have always been told that if the magazine isn't in the gun, it doesn't count). If we use the list the fine fellows who contributed to the wiki site put together Gunwiki: 922(r) Worksheet for SKS Builds then all you need to do to bring an sks into compliance is change the stock, fore end, and magazine assembly (follower, housing) and as long as it was not a yugo or threaded barrel with some attachement on the end you are now in compliance with sec. 922(r). you do not need to change out all the guts, etc to bring the count to ten or less. Now on to what prompted me to post this. You see a lot of SKS rifles modified and for sale. Everyone always asks "is that thing 922r legal". Well, to compile a list of counted components - Gunwiki: 922(r) Worksheet for SKS Builds you check everything that has not been changed, and do not click on the muzzle attachment unless you have one. The parts that don't have check boxes next to them are parts that have been deemed to not count on said weapon (go ahead and read a little on the site, there are plenty of reference letters where fine fellows took the time to actually write and ask questions vs spreading ignorance on the internet). So yeah, that sks in tapco furniture sporting a tapco mag is 922r compliant, if just barely- as long as it isn't a yugo. Yugo's need one more part changed since they have that useless grenade launcher attachment on the barrel. Now whether or not a folding/adjustable stock or high capacity magazine is legal in your area is another story. blah blah blah.....i'm bored. and yes, all the stuff I have built is 922(r) compliant, even though some of the US made crap is cheaper quality then the original parts - i used it anyways, just in case big brother was watching through my implanted eyeball camera or space satellite as i worked in my basement. lol And yes, i am sure i am just repeating something that has been said before on this site.....it just seems like people need a refresher once in a while to stave off the spread of ignorance.