Step 1: Find a Gun
After removing all the screws holding the case together I examined the contents. Of the original hardware I'm going I kept the trigger assembly and the A/B buttons. Everything else got cut out. Be careful to leave longer wires connected to parts you might use, this will save extra soldering later on.
I like to photograph the insides of things as a i take them apart, so i know where everything goes during the rebuild. There's nothing worse than being done and not remembering where that last bolt goes.