I've never done it. I did have a shotgun imported from Australia about 15 years ago. I used a dealer in Maryland to do that.

You will need a licensed importer. I have friends who have used Simpson, Ltd. and were very pleased. For details, look at this link: https://simpsonltd.com/firearm-imports/

Steve Bertram also does imports, and I have heard good reports of his services. He's a member of this forum. His information is here: http://www.bertramandco.com/firearms-importation1.html

Hopefully this gets you on the path.

Curl