I went to Toys-R-Us and found this:
Notice the priming handle. Here is a close-up:
Mine was defective. I was never able able to fix that, so I bought a second one and it worked.
Now, lets open it up:
You need the clip for the first part.
Take a knife and pry off the plastic backing so you get these three pieces:
Edited by Reagent X, 17 July 2009 - 02:04 PM.