Not directly related, but folks at the border crossings take firearms issues seriously. Some years ago, soon after 911 when border patrols were beefed up, we had a sad incident here in Maine.
Up north of the Quebec border, there are several Maine towns with border crossings where crossing the border has been part of life for a century or more. In many cases, families have members on both sides of the border, cross daily for work, etc.
Canadians frequently cross the border to buy US fuel, as it is considerably cheaper. Some poor Canadian was out partridge hunting, and crossed the border into the US to purchase fuel on his way home. He ended up getting stopped by Border Patrol before he crossed back. As it turned out, he had an old conviction in Canada that led the Border Patrol to believe he was a felon in possession of the firearm. (Aoparently he was not disqualified from possessing a gun or hunting in Quebec. I do not know what the conviction was for.)
The poor guy ended up spending several weeks in a US jail with ridiculously high bail that his family couldn't raise. Eventually public opinion swayed the politicians and he was released back to Canada for time served, but had he been tried and convicted, he'd have been facing years in prison.
So, despite the urge, I'd recommend you not pursue the smuggling option.