An AK is an AK is an AK, period. Yugoslavian, Russian, Hungarian, Chinese, Polish, Finnish, Romanian, Iraqi, Bulgarian, E German, Syrian, Afghanistan, N Korean....Theres a few I have left out...function is the same, parts and furniture differ, some parts are model specific to specific countrys. There are 4 basic AKs, the AK-47, the AKM-47, AK-74, and the AK-100 series. Then there are the 'other' AKs. Finland's Rk/Valmet series (Israeli Galil is the same gun), India's INSAS (AK-7).....
Tantal has good info too...link below...