I was looking through one of their catalogs and they have some pretty good prices on their barrels.  I could't see who made them though, does anyone know?

They advertise that they use Wilson Barrels,

yup, i heard wilson also

We use Wilson Match Grade Chrome-Moly 5.56 cal. on most configurations as described in our adverts. Please note that our printed color catalog is out of date, and although you can download it on our website, it is tagged as being 'old news'. Look at the main body of our website or at any of the four rotating ads in the Shotgun News and Gun List.

Barrels (alone) are in real short supply right now- it's best to call with your needs after selecting one from the catalog to see if it is available. Barreled uppers are pretty much so available, but it's best to call.

Veronica at M&A Parts

For lots of ar15 info and also about our products, see www.mapartsinc.com/anything.asp and the FAQ section, as well.