go to Google.com
type in barrel and hit enter
go to the bottom of the page and hit "Search within results"
type in "Rifle" and hit enter
go to the bottom of the page and hit "search within results"
type "blank" and press enter.
The first page should have several makers that you can save to your favorites. You can add to these; Star, Douglas, Shilen, and a few of the better known barrel makers.
PaulS