Here is what is puzzling me. One can see examples similar to the photo below, where the rear end has a wire sticking out and the “cover” is “inwards” the tube.
In this photo, shared previously here, the rear end is welded flush to the tube end
And this is a closeup from an AlJazeera video
and this is a tweet showing the propellant and the rear end
If what the IDF found was the real thing the rear of the missile should be different