I think that you mean the Armalite "A" pattern right? Cause it was my thought that only Noveske made thier 308 (N6) that matched up to the prevalent (all-seeing and all-knowing) Armalite "B" pattern. I could be wrong. Don't take my word as gospel. I also think that AeroPrecision made a short run of "B" pattern lowers.
Now....with all that being said. Welcome to the forum Pretext. If all of us haven't gotten the point across to you yet. It's pretty much Armalite with thier pattern, and everybody else on the DPMS/Knights SR25 pattern. Both are mighty fine platforms to build almost anything you want, off of them.
And.......you can tell from the tag line above my user name, that I'm on the Armalite side.
Good luck deciding my man.