Thanks for the input. Yeah, I was trying to change the piston as a 922r but I guess i don't need it. Just did the checklist at http://thegunwiki.com/Gunwiki/BuildAkVerifyCompliance and I'm good to go. Will try to post some pix when it done.
I'm pretty sure this question is floating around somewhere, but where can I get a replacement or spare bolt carrier? The reason for it, is I'm planning on converting my 7.62x39 sporter. Instead of drilling and changing out the gas piston, I rather get a spare and do it. Or maybe I'm doing it wrong, I should change it. Any input or direction toward getting one would be appreciated, thanks!!!