I stopped a car at 3 am the other night. When I got to the drivers door I saw the driver stuffing a large stainless pistol ( Ruger .45 maybe a P90? I dont remember, I dont have any Rugers) under the drivers seat at his feet. Needless to say he came out of the car and was cuffed.
Turns out he had a pistol permit and later told me his safety class instructor told him to do that if he ever got stopped. I told him its a good way to get shot.
My advice, roll both front windows down (never know which side cops walk up to), turn your inside light on, radio off, hands on the steering wheel. Then just follow directions as far as getting out license, reg., insurance, etc. Then if the gun is on you, say so and let them know you have a carry permit. I often get people out of the car to show them violations (broken/burned out lights, etc.) and to see how they walk, talk, etc. I work nights and its a great way to catch drunk drivers.
Somebody tells me they are armed and hands me a permit, they will likely get a warning and send them on their way. I know that by having a permit they are not a felon, no drug arrests, domestic violence etc.
If I find out by suprise, things go downhill quickly. My two cents.