Information on the location
M5 Industries is a special effects company and the Mythbusters' headquarters located in San Francisco, California. It was founded by special effects expert and co-host of the MythBusters television show, Jamie Hyneman.
When the series began, its primary shooting location was the M5 Industries workshop, now known itself as "M5", where the Mythbusters would plan, prepare, and prove or bust their various myths. M5 also made the animatronic puppets for the movies The Nightmare Before Christmas and James and the Giant Peach, as well as making commercial props for Nike and 7Up.
Appearance in the rap battle
This is the location where Jamie Hyneman and Adam Savage rapped during their first verse. It disappeared after they set off their explosion. Objects that are commonly used in the Mythbusters' projects could be seen in the background, including ladders and wood panels. The logo for the MythBusters television show was also located on the top left corner of the room.