I don't tell then anything when I'm pulled over. It's not their business and has nothing to do with a light being out or going 5 mph over the speed limit.
They have seen that I had a CPP before the approach and immediately asked of I was armed in the past, and then preceeded to have me step out of the car, take my firearm, take it back to their cruiser out of my sight to run the serial, and then return an unloaded gun, mags, and a handful of loose ammo while other cars and pedestrians are going by. Then I'm told not to reload until after they drive off. Has happened at least 3 times over the years.
Now I don't tell them anything, and I have my papers ready before they even get to my window. It's none of their business, there's no way they'd know unless I told them as it's a simple traffic stop and not a felony stop, there's no duty to inform in my state. I do not believe there's any criminal penalties or threat to my permit if I do NOT inform L.E. if asked. They have access to my criminal and driving record, and can see that I am legally allowed to carry. There's no need for them to worry about their safety.