Quad cannon remake

I reworked the quad cannons that i had for my battleship, removed a missile launcher from it so its now just some guns.
i just have to resize it so it will fit with the rest of the ship.
The idea is that they are independant of the ship, have their own power supply in them and are also ejectable incase of an overload, so in a way its like a flying gun turret that can dock with a ship, station or even land on a moon and other objects.