Hey guys, I'm purchasing my first AK this week and it is a Norinco Mak 90. I'm not a huge fan of the thumb hole stocks, so I was planning on switching it out. I've heard that the best replacements for these come from here http://www.ironwooddesigns.com/IWDHome.html I've heard that along with the stock set, I need to make some other changes to make the AK legally compliant. I was hoping that y'all could either explain to me what I should do, or which route I should go. Like I said, I'm new to AKs, so I know little about them. Also, does anyone have a Mak 90 with a synthetic stock? Any help would be appreciated.