I've been pulled over once with a gun. We he walked up I had my right hand on the steering wheel and my CCW and DL out the window in my other. I just said I have my CCW permit. Don't say "I have a gun." IMO it seems like if they know you are responsible enough for CCW they may even cut you a break.
Another time I got rearended, I had 2 guns on me and didn't say anything. Cop either didn't notice or didn't care, they both print pretty bad.
Someday I'll be good enough to know if a gun is accurate or not.