I've gotten a couple guns in from the states. Most recently was a WE G36, a few months ago. I only bought it because it was on a clearance sale, and got a really great deal even with the conversion. It showed up in a week, came by UPS.
Not sure I'd do it again unless I was getting a real smoking deal, and could throw away the cash I was spending. It's too much of a risk to be buying airsoft guns out of country.
You can try if you want, but just keep in mind that your stuff could be taken/destroyed.