Pat at ORL has got some of his own full-auto stuff, but I don't think he's got any on the shelf. I just checked his online store and there's just cans and one SBR for sale there. He's got his own post-samples, but none that are saleable/transferable that I've ever talked to him about. He knows LOTS about the process though, he's a good wealth of knowledge and a SUPER nice guy to boot.
Mike @ TT is more of a gunsmith type guy that threads barrels, LOTS of them, for people across the whole country; he also makes .308 cans and can "manufacture" a SBR or SBS for you. I haven't really talked with him much about FA; since I can't afford it, I've never asked... He is VERY knowledgeable about cans, and every other gun-related question I've ever asked him. He loves to stand out by the front desk and chat, he's a really nice guy and I'm sure he'd be happy to help educate you on the process.
just a quick FYI; two shops I'd stay away from (my own personal experience...
) DSG and BCA
cheers, Benji