Do you live in the US? It is illegal to export gun parts from the US without a license so it is best to state your location to avoid getting anyone in trouble that might be willing to sell you something.
Sorry mein freund, we cannot legally send parts your direction without a Federal export permit. Obtaining one might be possible, but definitely is not practical. Come and visit, I'm sure many members here would be glad to let you handle and shoot their beautiful DDR weapons.