Here's the ground-attack version of the Gundam as seen in the popular OVA series 08th MS Team:

Bandai has worked their usual Master Grade magic with this kit -- it offers inner mechanical detail on the arms and legs, plus comes with a removable backpack unit that opens and allow storage of weapons, magazines, etc.

Comes with multiple hands, beam saber, 180mm cannon, two rifles with removable magazines, shield and more.