Let’s get ready to rrrumble! If you believe Paul Barrett, America has decided on America’ gun. It’s Teutonic, Tenifer-coated and tenaciously reliable. In fact, he christened Gaston’s gun in Glock: The Rise of America’s Gun. I guess if you sell 10 or 20 million heaters to everyone from your friendly neighborhood LEO to Ma and Pa Kettle, you have at least a plausible claim to the title. Now, however, the original thinkers at CNBC are promoting another contender with their upcoming, uniquely-named exposé, America’s Gun: The Rise of the AR-15. The promo features plenty of portentous music with hints at the insightful analysis we’re in for: “It is both legal and lethal.” Style aside, though, who’s right? Which one really is America’s gun? The Glock? The AR? Or do they both have it wrong?