dickn52 said:
ITAR-DOC5 license not needed to Australia.
Up until about 4 years ago I worked international programs at Lockheed Martin, my main customer was the UK Army, the ITAR folks at the state department required us to have an export license on almost every part of the system. The export license for ITAR items comes from the state department so if you have any questions that is probably the place to start. Do not ask the post office whether it is legal to ship a possible ITAR item without an export license as they are usually only aware of their rules.
Keep in mind that these laws are federal as such they do not have to make any sense, but it is in your best interest not to violate them. I know someone who sold a scope to a person in Australia 3 years ago and the state department got a hold of him while it was still in the country. Neither party ever got the scope and of course the State Department did not refund any money.