SGammo has them in stock as I'm posting this. I just ordered one. It says 4 available. You better get 'em while the gettin's good.
http://www.sgammo.com/product/762x3...round-ak-47-drum-magazine-new-romanian-762x39
http://www.sgammo.com/product/762x3...round-ak-47-drum-magazine-new-romanian-762x39