“The broad thesis of this book is that we cannot make sense of the United States in the nineteenth century, or the twenty-first for that matter, without taking into account Colt and his revolver. Combined in the flesh of the one and the steel of the other were the forces that shaped what the country became: an industrial powerhouse rising in the east, a violent frontier expanding to the west. In no American object did these two forces of economic and demographic change converge as dynamically and completely as in Colt’s revolver.”