I read through this very quickly, so I apologize for mistakes, oversights.
http://www.arniesairsoft.co.uk
It's a great resource. I personally have a standard TM FA-MAS F1 purchased from Hong Kong, delivered to Houston, TX. It came out to about 300 bucks with battery, charger, extra hi-cap (which runs out far too fast, for my tastes, even though it holds 300 bbs). It works fine, I just play with friends though, no formal Airsoft with leagues or anything. Hope that helps.
EDIT: Dentrinity promises no shipping seizure. I didn't use them, I got my Airsoft gun fine. It'll come with an orange tip and if it's an HK replica, it'll be puttied. Mine actually failed to come with the actual flashhider, after a brief e-mail exchange, it arrived in the mail.