The irony of the Twitter user using Tombstone as a reference for how cool Kurt Russell is for being pro gun is, Wyatt Earp was actually helping his brother enforce a local ordinance against having guns in town, in other words, dum, dum, dummm..... "gun control."
As for what Russell had to say, he's wrong, dead wrong. There will always always be people who think they can get the drop on you whether they know you have guns yourself or not. Just two weeks ago, I literally saw on the news, two black guys randomly try to take a uniformed cop's gun away from him, while he was buying something in a convenience store. They themselves had no weapons at all. It didn't matter that they could just visit the next state over where you could purchase a gun legally without background checks, permits, licenses or waiting periods. A criminal isn't going to be deterred by the fact that you may have a gun if he can get one just as easily. In the example I just gave, they're not even deterred when they don't even have a gun and you do! In the film, Tombstone, all the gang had to do was surrender their guns till they left town and that would have been the end. Instead they chose to have a gun fight and risk death, or at the very least risk killing a town marshal and his deputies and be on the run for the rest of their lives. Criminals aren't deterred by guns, jail, long sentences, or even the death penalty. In Texas, where guns are revered and gun ownership is skyrocketing, gun violence is going up, not down!