Dad and I just finished blowing to pieces the B-17 we assembled about nine years ago. So much fun. Almost as much fun was picking up the pieces afterward and trying to identify them. The wings were surprisingly difficult to take out---they were angled just enough that the pellets kept glancing off up into the fuselage. It took a series of shots in exactly the same spot just to crack one, and even then it held together pretty well.
...I love my .177 revolver, despite it being mostly plastic. ^_^