Fighter pilots aren't cheap. The U.S. Air Force estimates that training a new pilot to fly a plane like the F-35 costs $11 million. And that doesn't count the priceless experience of a veteran pilot who has been flying for years. That's why the U.S. Air Force is willing to offer half-million-dollar bonuses to retain experienced fighter pilots.
Guns are tools meant to address life or death situations, so a poorly designed or manufactured gun often earns particular scorn. The gun world has long memories of particularly bad firearms, many of which sealed the fate of brave soldiers. The rapid pace of firearms development in the nineteenth and twentieth centuries meant that few if any mistakes were repeated, but the memories of these weapons—some with lethal consequences for the owner—linger go on. Here are five of the worst guns ever made.