Another interesting kit in the Origin Zaku II line, went with the BRRRRRT vulcan anti-air gun instead of the cannon. The main attraction for this kit is really the backpack and its weapon accessories. If you're into kit bashing you can definitely throw the backpack on to the Origin C-5/6 Zaku II. If you're feeling crazy combine it with the Origin Char Zaku II.
The only gripe with this kit is the vulcan/gatling version can only equip one of the waist cannons (the left one), but with the right hand free just throw on an spare ZMP machine gun or SMG from another Zaku kit. Gave it a SMG from the HGUC Zaku F2 kit.