I've been to their vendors building the last 3 years, they serviced my 90T and did a complete annual on my Kolar while at the Grand. I don't think they have the machinery there for a proper barrel/reciever fit, but don't take my word for it.
A few weeks ago I sent two barrels and my receiver to their factory in WI. for barrel fitting and timing. (two trades on my original barrels) They said they may have to do a little machine work and fitting to make an exact fit even though both traded barrels easily fit and worked on my receiver, about a week later I got everything back looking brand new along with matching SN on both barrels.
Their service is about a good as it gets.