Plot: Episode three focuses in on the guns of the North and South, notably the smoothbore muskets on both sides, some converted to percussion guns, some not, and some coming straight from the armories as percussion tools. The episode looks at the evolution of arms in the Civil War, beginning with the model 1855, a smaller caliber but more accurate "tape primer" firearm invented by a dentist named Edward Maynard that ultimately proved unreliable in practice