Happy's Airsoft got a video for owners of the WE Airsoft's hand cannon, the WE Desert Eagle GBB Pistol, showing how to fix and upgrade it... "This video will show you how to replace a broken nozzle, as well as how to replace the inner barrel and bucking in your WE desert eagle! This will only apply to the WE version though. Working on a TM or a KWC will be different."