Republic AV-7 Anti-vehicle cannon.

All the original parts are there except 6 out of 8 straight mechanical arms with id 4505757. I have instead changed the missing 6 to bent mechanical arms (accualy looks better).

The Droideka also has a slight change. It should have a black part id: 4521187, but instead I changed it to the part seen on the last picture. No difference in appearance.