Dan,
If the interest is there, count me in. I don't have anything to build, but I do have a bunch of AR tools. Action blocks, panther claw, gas tube pin punch, armorer's wrench, FAT wrench, various punches, etc.
I finished building my 3-gun AR before I moved... still haven't had a chance to shoot it yet. Between unpacking, my second job, and tending to the "new and improved" honey-do list for the house, I've been too busy.