I did not believe it so; I did a google search. I will add my perhaps obvious 2c: " idiotic idea". And at that, I am assuming this is not an elaborate hoax. https://www.africahunting.com/threads/double-rifle.9815/page-2
A tid bit from the above link. Maybe time to buy stock in blazer, this is right up there with the $10 cup of starbucks.
The cost is in the $175K area....they are all custom made.