Meng MMS14 Dune Movie: Harkonnen Ornithopter Model Kit The Dune Harkonnen Ornithopter model kit has a wingspan of 173mm and a length of 88mm once assembled. This is a mini size replica of the Harkonnen ornithopter in the film Dune. Though this is a mini size replica, its wings are free to flap. Once assembled, the model can be freely switched between the ground-parked option or the flying option.