These are rockets to display with your M72 versions A7 to E10. Display stands are included for each rocket as well as for an M72 LAW, which is not included. 5/64" wire or rod wil be needed to attach the fins to the back. The real rockets have a double torsion spring to flip the fins out after it leaves the tube, but I have yet to find something that would fit. Perhaps you will have better luck.
These rockets should be able to fit inside my M72 LAW design as well as a real one, however, they are meant for display. Each of the sections of the rockets are joined by a 1/4" pipe, rod or dowel to ensure accurate alignment when gluing.