I have this Jig and it does Great work with a router,
it works with any lower I have used it on and does good work.
I have all of the tools needed and a small drill press too.
I would be Game for this if I can get the day off work.
http://www.modulusarms.com/Modulus-Arms-heavy-duty-universal-ar-15-80-lower-receiver-jig/
That looks like the cat's pajamas.
I'd provide the beer.