The tens of thousands of gun enthusiasts, sellers and manufacturers gathering here for the world’s largest firearms show are well aware of the political battle unfolding in Washington over tighter controls on assault-style rifles and high-capacity magazines. They are neither worried nor reassured. ------ It’s ridiculous,” Steve Drake, the owner of the Gun Den in Shelbyville, Ind., said Tuesday outside the show’s well-guarded entrance. “Newtown is a tragedy, but it goes back to insane people. You can’t control insane people. What we need to do is put more arms in sane people’s hands so insane people won’t be able to get so many shots off.” ------ “Lawmakers should put their efforts into harsher penalties for straw purchasers, more prosecutions of violators of gun laws already on the books and more treatment and sharing of state information about the mentally ill,” the executive said in an interview in his hotel suite, where an armed guard was posted outside the door.