O.K. I have added a few more components, in this view the mounting point for the firing mechanism has been glued to the tube and the basic shape of the breech lever is seen from the side.
This top view shows the breech opening lever and the re cocking cam pinned in place.
Some overall views.
The rough components get streamlined and finished off once the final shape has been established.
This sub assembly is coming along fairly well I think.
Inside the tank.