Mark V Mass Driver defensive structure

The Mark V is an defensive structure used for heavy defense, often together with the Geralic Railgun.
It serves as an heavy ground defense, to take out tanks with tungsten rounds or large groups of infantry with HE rounds.
It can also be used as defense against large aircraft, to barrage them with HE or to fire on smaller spaceships.
They are often called the little brothers of the ship-based mass drivers and they can easily cripple light ships.