At what age are you responsible enough to own a weapon? A firearm? Or to get more specific, a handgun? On Friday, a Federal judge in Northern District of Texas ruled against overturning a law that sets the age limit at 21 or older for buying/owning a handgun. Most states set 21 as the minimum age for handgun purchase, and 18 as the youngest you can be and own a long gun. The NRA, God bless ’em, plans to appeal. But if we’re gonna have law that puts limits on Constitutional right, what limits? What’s reasonable? And how young is too young to own a handgun?