Model Variants (Including Prototypes)
G5 Mk I - Initial Production Model
G5 Mk II - Second production model
G5 Mk III - Third production model
G5-2000 - Most recent production artillery model; 52-caliber.
T5-2000 - G5 155mm main gun fitted to a 4x4 wheeled truck chassis.
T6 - Tank turret fitting the 155mm main gun of the G5 howitzer.