John Bainbridge, Jr.'s Gun Barons is a narrative history of six charismatic and idiosyncratic men who changed the course of American history through the invention and refinement of repeating weapons. Love them or hate them, guns are woven deeply into the American soul. Names like Colt, Smith & Wesson, Winchester, and Remington are legendary. Yet few people are aware of the roles these men played at a crucial time in United States history, from westward...