Just as World War II transformed the United States into a global military and economic superpower, so too did it forge the gun country America is today. After 1945, war-ravaged European nations possessed large surpluses of mass-produced weapons, and American entrepreneurs seized the opportunity to buy used munitions for pennies on the dollar and resell them stateside. A booming consumer market made cheap guns accessible to millions of Americans, and rates of gun ownership and violence began to climb. Andrew C. McKevitt tells the history of this gun boom through the dynamics of consumer...