AK-47.org / Marsh Hawk Arms 80% AK47 Receiver Blank Kits, Lower Bolt Rails, Assembly Bolt Kits, and Information Packages. Blueprints. There are no 80% saiga-12 flats that I know of. I don't know of any Saiga 12 parts kits either. However.... It could be done. But not simple, You could use the AKM receiver or NDS Romanian RPK receiver I would think. The ejection port will need to be made larger and mag well, not sure about the gas system though, those are two just off of the top of my head. There are some dimensions to be found here : http://www.dinzagarms.com/downloads/downloads.html I did find a parts kit, auction has closed, but I would be willing to bet you could contact the seller and find out if there are more? http://www.gunbroker.com/Auction/ViewItem.aspx?Item=247390030