I spoke with a representative of Browning yesterday afternoon... I only asked about the .30-06 version, and apparently only 305 were scheduled to be made in that caliber.
Depends on the specifics of the one you have.
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Octagan
Yes
Browning Automatic Rilfe
Japan
Yes
Embellishment
Besides a number of books published on Browning, and some of the gun collector forums (google Browning collectors) you might start with Browning. They have a website, and are still in business making very nice rifles, shotguns, and pistols.
As far as I know browning did not have any firearms made for them in australia.
Rifles can be purchased from the manufacturers such as Browning or Smith & Wesson. Rifles can also be purchased from third-party stores such as Amazon.
Browning has made centerfire lever action rifles in various calibers over the decades.