By those wordings and your interpretation, you CAN buy a can that is made in AZ, in addition to making it yourself?
Montana did something similar (MFFA) and they backed off when BATFE started pushing on them. Example:
http://firearmsfreedomact.com/2009/09/29/929-batfe-letter-re-the-mffa/
The courts will see it as an attempt to circumvent the Commerce Clause of the Constitution. The current jurisprudence has broadly interpreted the Commerce Clause to the point of absurdity. The Robert's court hasn't been too keen on a retrenchment of that sweeping interpretation.
...and per the 9th Circuit Courts:
http://firearmsfreedomact.com/2013/08/23/ninth-circuit-rules-in-firearms-freedom-act-case-82313/
I anticipate that the AZ law will be interpreted that way but nobody in AZ has tested it at all... the lack of which is probably due to the futility of the cause as demonstrated by what's areadly gone down in montana....
It's a legal minefield..... still good to know either way.