A panzerschreck right after firing should look pretty much the same as it did just before firing, minus the rocket inside that is. It's very similar to the US bazooka in nature.
Here is a link to the panzerschreck:
http://en.wikipedia.org/?title=Panzershreck Not sure if this is what you wanted or not. The panzerfaust looked different after firing, in that it was "disposable", after one firing, the body was tossed. Here is a link to a panzerfaust site:
http://www.geocities.com/Augusta/8172/panzerfaust2.htm And here is a picture of a
panzerfaust, not necessarily fired but in two pieces.
Jamie