Tom's Airsoft Channel does a disassembly video of the Hi-Capa and 1911 airsoft GBB pistols that should help owners. But since this is in German, non-german speakers will need to turn on their language captions in their YouTube players... "Hi people! Today's a small technical video on HiCapa and 1911. Once the weapon completely disassemble and put back together. If you want to see other models please do comment.

Greetings Tom"