rocket launcher FW 190 late version
 

hello Can any reader help me with picture of from a steel tube 12cm thik inside you have to slide a rocket that can have a size of 4cm more or less , its 1800mm long en the wall of it is 2cm thik , the mouth is conic like a shell it was attachted under the wing of late FW190's end war. can anybody help me with this matter?
thank you