Penny,
Chambers has never ( up till now) supplied barrels with their kits.
The barrel is always ordered from their recommended source. (with a seperate check to manufacturer) As Mike says, they have exceeded Getz's ability to consistently supply barrels, so other avenues had to be sought.
In the process, Barbie ( Jim's daughter) started Buckeye Barrels.
Look at their order page, and you'll see how it's done. In fact, their order form still shows Getz as the supplier to order from. But, as I said, they have established their own barrel business now.