Answer: Run! Seriously, that depends on whether they're pointing it at you. Actually, that wasn't entirely serious.

The best answer is, that depends on whether your friend has a permit for "carrying a concealed firearm." Ask them if they have one, and if they say they don't have one (and assuming you're outside the home where a permit is then necessary), then get away from them and their gun immediately. If they tell you that they DO have a permit to carry and conceal a firearm, ask them if you can see the permit and that you're simply curious as to what it looks like, etc. "Better to be safe than sorry," as the old saying goes. If they do NOT have a permit to carry and conceal the firearm (and again assuming you're outside the home where a permit is required), then they can be arrested for the felony offense of "carrying a concealed firearm," and you are at risk too, depending on the intentions of your friend.

In Florida, we have the law called "10-20-life," meaning you'll go to prison for a "mandatory minimum" prison sentence of 10 years, if you're convicted of being involved in a felony offense involving a firearm; and if that firearm is discharged (goes off!) during the commission of the felony, you're getting 20 years (mandatory minimum!) upon a conviction; and if someone gets shot when the gun goes off and you end up getting convicted, you're getting "life!" Florida doesn't play around.

Other states are following suit. You need to know about these lengthy mandatory minimum prison sentences, BEFORE you hang around with anyone who illegally carries a firearm and an "attitude" - you know the type, the guys who have that temperament to cavalierly, inappropriately and illegally use the gun!