You caould try PM'ing different, he may know of other barrel makers, not so mainstream as krieger.
There several canadian barrel makers out there but who knows how much it would cost for them to tool up for these barrels.
I know of one outfit that would and could make m14 barrels from premium blanks, we have the drawings, BUT is there a market for say.... 100 barrels?
Because that would be the bare minimum run size to make it reasonably priced.
For a custom job one off, try jerry (mysticplayer), he can provide a premium blank , possibly with some of the profiling done.
Then a good machinist to do all the threads, gas port, torque shoulder and chamber end detail.... But it will cost huge