I have already finished building and painting a pair of
GK Dreadknights and a Stormraven, so this question is more for my own curiosity.
Like any
GW kit, I have lots of extra bits from both of these kits, which I have always loved. But usually I can discern what those pieces were intended for. These have had me stumped for some time now.
This one I think I have also seen on another kit with clear 'glass' pieces, maybe the Ork Dakkajet?
Could it be meant to cover the little sensor between the missiles?
No not the dead. I know what that is

.
This was in the Dreadknight kit. It also doesn't show up anywhere in the assembly instructions and no obvious (to me) clear space to tack it to. Is this the personal teleporter? some kind of a gear drive actuator in the hip area? Maybe it covers the psilencer's shell ejection port?
I haven't seen either of these bits in the codex pictures or any other players' models. Any clues?