Criterion Barrels converted to BM59 barrels?

[mikebaker1129]

Tim what do you have to do to the .308 Criterion barrels to get them to work on a BM59 ?
I see that you make the cuts for the lower band and I assume you cut them down to length. Does everthing else line up or is there more to it than that ?
I am not looking for trade secrets ,just curious as to what all is involved?

[timshufflin]

Not really much more than I have to do with a Mini-G barrel except to add that darn keyway. I use an indexer and vertical mill to do that job.