I've been deep in drawings and such and improved upon the orginal cannon i had. The mesh is now comprised of 4 main sections:
The Barrel
The Weapon Module
The Power Module
The Coolant Module
The barrel section will rotate in realtime, as the weapon changes, and you will see this, through the transparent sections in the weapon module casing. This can be upgraded for more weapons slots.
All sections are upgradable. I'm going to unwrap it now and texture it.

(The strange shading is a result of the render the modeller produced. Just a smoothing issue i reckon.)
The Barrel
The Weapon Module
The Power Module
The Coolant Module
The barrel section will rotate in realtime, as the weapon changes, and you will see this, through the transparent sections in the weapon module casing. This can be upgraded for more weapons slots.
All sections are upgradable. I'm going to unwrap it now and texture it.
(The strange shading is a result of the render the modeller produced. Just a smoothing issue i reckon.)