Your rifle would have to be special built. Pretty much from the ground up. Reamers would have to be special made along with the dies. Building the muzzle brake for it would be the easy part. My guess is that it would cost you between 20 and 30k. Remember, the reciever would have to be built, the barrel would have to be built. Magazine if desired for more than single shot, the bolt, and of course the stock. Unless you are well healed and have a lot of time to wait while it is built, It would probably be better to forget the project.
No such thing as a stupid question. What is stupid is not asking it.