Latest WiP of the Marauder series.
Left to right:
Marauder 3D, Marauder 5S, Marauder 5R/T and Marauder 5D.
Mainly involves changes of the dorsal Cannon, however I added a sensor bit to the left torso of the 5R/T to represent the added electronics while the 5D has a small missile launcher for the additional self defense weapon system.