Another thanks to Mike, smithdr and Kevin.
Next step was commanders hatch. A tough nut...
Curved ring consisted only of petals, that later need to be cut into, for hinge axes.
Managed to assemble it somehow.
Pay attention to the order of four rings stripes. Two inner and two outer. Glued one on another with bottom base line.
Ring was curved and glued before putting it on power frame.
After i did it, then only i cut out openings for hinge axes and finally removed
white stripe.
Interesting solution with machine gun holder. For stiffness it has rolled paper inside. Such a awesome consideration in design.
Then i assembled doors and visors, added hatch lock and head cushions and put all parts together.
Ring with doors is moveable inside the hatch.