I could kick myself for not having started recording as soon as he approached me!
You should already have had the recorder running. Most cops are going to get upset if you start fumbling in your pockets during a stop. Especially if they already know you have a gun. I recommend a pocket recorder that will hold 10 or more hours, or one that will just continue running and only save the last 30 or 60 minutes. Slip it in a pocket and leave it running all day.
I tried to... had to drive home first and then spew it out here on the forum as it was the first thing opened on my computer once I woke it up.... from now on, I will press record before they ever even begin to speak to me!
I guess I should have specified "write it down somewhere other than the internet".