I would reccomend myself but I am not set up to do it properly yet. I would not want to attempt it unless I could do it right.
Hopefully within this next year I will be able to do just about anything one should need.
I did know of a couple of people in Denver but they have since sold and moved to companies such as Nesica Bay.
I'd also like to know more on lapping the rings,
I assume you mean lap the lugs??? The best way to do it is to remove the barrel and attach a lapping fixture to your receiver. After that you basically just use lapping compound on the lugs until both are making 80% or more contact on the lug seats.