Hectic, you are quoting a US Department of Commerce regulation. The US Department of Commerce only has jurisdiction over the sale or transportation for sale of an item. No power over ownership or private transportation. This is why you shouldn't just start quoting laws without experience regarding them.
And yes, I am sure about US laws. I live in the US and travel with airsoft to Europe frequently (Berget, etc.) so I am familiar with airsoft laws of several other countries. For example, I have transited Germany with over 0.5J power airsoft guns by receiving a transit permit from the German government.
I have a detailed writeup on the Berget forum about bringing airsoft into Sweden as well.