I am among those who would NEVER convict somebody of violating an unConstitutional law infringing the right to keep and bear arms.
The system we have is certainly broken and has been for quite some time. But it will not be made better by having jurors willing to follow Congress, the President, or the trial court judge instead of the Constitution and the Bill of Rights.
You didn't answer my question: Would you vote to convict someone of violating an unConsitutional law?
If you believe in the rule of law, you would defer to counsel to raise the issue of constitutionality on appeal. I recognize there is a difference of opinion on the issue but a large majority side with side that believes juries decide factual issues while judges, particularly appellate judges, decide issues of law. Regardless of what side of the issue of jury nullification one supports there are risks of both approaches, but I fear mob rule more than the alternative.