Regardless as to whether your State has a duty to inform or not, the best policy is to let the officer know up front when they as for your license, registration, and proof of insurance. The best way to do that is to say, "I will comply but for your safety and mine, I am licensed to carry and I am carrying. How would you like to proceed."
Never mention gun, firearm, or pistol. There maybe a partner coming up on the other side that just hears "gun" and freaks. That statement will inform the officer, disarm any potential nastiness, and keep you from getting shot.
All while staying the vehicle with your hands in plain sight on the steering wheel or dash. Don't go rummaging for anything while waiting for the officer and pull over as far to the right as you can. The little things help and depending on the reason for the stop, you might just get off with a warning or a "be careful and have a nice day."
The officer is the one in control and just wants to get home like everyone else. As long as they are doing their job in accordance with the law and the Constitution, there is no reason to give them a hard time. As long as you are polite and respectful, things should go easy and you will be on your way. Act pissy and rude and they will start looking for things.