I have one exactly the same with the detacheable barrel, apparently this was done to get around the arms limitations put on the Germans after the war withouit the tube it is just a toy. I have seen scirocco's and it has a one peice barrel and is a model 10 which came first I have no idea. mine is complete in its box with all the bits, I really like kids guns and are always our first choice for plinking with.

Ormicron