I have tested some of their lasers, the "Crossfire" series would appear to definately be a CNI built laser, though it is modified to take a 3.6V rechargable lithium battery (better then 2x C cells).
I'm in Canada, not the US, but I've had no issue ever receiving lasers through customs. I've never had to pay any duty fees either, as they usually mark it at a low value. The US might be a bit more strict, but I don't beleive you will have an issue.