Coilgun

A coilgun, also known as a gauss gun, is a projectile weapon that uses a electromagnetic coils to propel a ferromagnetic projectile at high velocities.

Overview
Coilguns consist of coils arranged along the barrel in a straight line. When an electric current flows through a coil, it produces a magnetic field that pulls the projectile and pulls it towards the center of the coil. Once it is centered, the coil is turned off and the next coil is activated, repeating the process and generating more and more velocity with each coil. A strong coilgun can reach the same hypersonic speeds as a Railgun. Also like a railgun, coilguns require a battery source, and may also have a heat sink in the case of larger coilguns. Coilgun munitions need to be ferromagnetic or else the weapon will not be able to fire it.