I was browsing through their site and noticed one of the 'Ask one of our techs!' things, and "Shazam!" thought I, "I shall ask these experts about my idea for a AR-10 in .30-30!" So I did: "What AR-10 bolt could be modified to work with the .30-30 casehead?"
Three days later: "You need to talk to a qualified gunsmith, nothing we can recommend."
Well, crap. So I guess I start going down a list of "What can you get a AR-10 bolt in, and what's the largest/closest size head?"