I believe your gonna hit some snaggs trying to import a handgun into the country....Probably at Customs.

Because different countries allow different configuarations of weapons, as well as a ban on imported firearms....your probably going to be denied access or the firearm confiscated. Firearm parts are not banned from importation. (read between the lines here) Of course written permission from the State Department would allow it. Glocks sold here are actually made here...or at least assembled here after the ban. Your Glock was probably made in Austria. Have you considered just getting a different one once you move here?

To have a CCW here....no, there is no provision for being a citizen or resident....State or Federal Government issued ID though