I think Mr. Joerg himself sells cougar?
I don't sell slingshots, this is just my hobby. I sometimes give some of my samples away, in drawings and so on, but no sales.
Fish does sell the Limited Edition (300 pcs. made), he is the only source worldwide for them. Dankung sells the Special Edition, a very similar product, with different engravings.
Hogancastings, as far as I know, do not cast stainless steel. The Cougar should not be made from aluminum, brass or bronze, it would be to weak. Only steel works.