ScarFab94 does a review of the Ares Amoeba Pro M4 KM10, the 10-inch version in the Ares Amoeba Octarms X Series. This has a metal receiver with Amoeba internals, which means a gearbox with the EFCS that you can program with the Ares Gearbox programmer which you will have to purchase separately. The review is in French, but thankfully, there are English subtitles.