Except... no. If the jury does anything aside from act as a trier of fact, they have to do it under the radar. It's the legislature's job to make laws, and judges' job to interpret them. Any duty that a jury has to make judgments of law comes from some "higher law" source, not from anything you'll actually find in a statute.
They have to act under the radar because judges abuse their power. They have the right and duty to judge both but must get past the judges who abuse their office.
If I am ever called for a trial involving our RKBA and "gun control" it is very improbable that I would ever be allowed to sit on the jury.
Should such an event ever happen, you can count on my voting for dismissal on the grounds that ALL "gun control" laws are unconstitutional.
The JURY is the final authority on any law and it's application.