A rail gun was a weapon which was no longer in common usage by the time of the Galactic Civil War. Nevertheless, The Most Honourable Guild of Armourers would sell examples of such rare weapons.
Electromagnetic projectile devices often appear in fiction, especially science fiction where they are described as Kinetic energy weaponry, Gauss guns, Mass drivers or Railguns. However, their fictional behaviour rarely matches that of real-life projectile devices, which are typically much less powerful and far more bulky.Some fictional sources describe the projectile as moving at significant fractions of the speed of light, implying an unrealistically high amount of energy given current human capabilities.[1] The coordinate mass (mass accounting for effects of special relativity based on velocity) of a projectile is (\frac{1}{\sqrt{1 - (v/c)^2}}) m, where c is the speed of light and m is the mass at low velocities, where the effects of special relativity are insignificant. The kinetic energy of the projectile would be represented by \frac{1}{2}m v^2, where m is the coordinate mass, and v is the velocity. As the velocity of the projectile increases, the total mass increases quickly, making it immensely hard for velocities of such magnitude to be attained. To date only microscopic particles have been induced to go so fast through human technology.
