Please forgive me if this has been covered, but I tried searching for two hour + sessions now to no avail...

Who manufactures the AR15.com roll mark lowers that are on sale in the AR15.com store?

There was a really great thread I read years ago with pics from a lower from each of the different manufacturers, and pointed out their characteristics, so you could recognize new roll mark lowers.
I couldn't find that thread either.  I used to think I was good at searching.  

Thanks for your help.

Don't know who is making the ar15.com lowers but here is the other thread you are referring to..

http://www.ar15.com/forums/topic.html?b=3&f=12&t=318113

thanks man, that was it!
...and it's a sticky to boot!!!  
i could find it with search to save my life.

about the AR15.com lower:
it's hard to tell from the one pic on the store, but if i had to guess, i'd say LAR.
i'll put up some pics when i get mine in a week or two.