First of all, let's face it. It would have to be Artest, right? That's obvious. So if Ron pulled a gun:
Pau would mutter under his breath, with European disdain, "los stupidos Americanos" and go back to reading Cervantes.
Drew would say: "Cool! Is that a new wireless controller for the Wii? Can I play?"
Lamar would whip out his Vado HD, start filming, and say: "Chloe is going to looooooovvvvveeee this!"
Fish would throw himself between the gun and Kobe.
Kobe would give Ron his icy stare and say: "You'd better pull the trigger m---er f---er because if you don't, you're never going to touch the ball on the court again."
Of course, none of this would be a problem on the Lakers because Phil would use his Jedi Zen powers to telekinetically remove the gun and then wave his hands to make everyone forget about it.
Just another day at the office for our favorite team.
