I like to use Greg aka bugholes, aka Southern Precision Rifles, or 3rd Gen alot, but Bruno's just got a huge order in with every barrel they carry saying "in stock". Good luck hope they got what you need!
I have ordered 8 Brux barrels from Bugholes in the last year and the service has been great, all 8 were non-stock items due to werid contour and twist combinations. I used to order the barrels direct from Brux but I get the barrels faster through Bugholes at the same price.
From now on I will get all my barrels from Bugholes.