The following weapons were used in the anime series Shirobako:
Heckler & Koch MP5A3
The Heckler & Koch MP5A3 is seen with Anti-Firearms Squad officers busting into a stadium in an in-universe anime episode draft for Exodus! in "What Do You Think I Was Trying to Say?".
Heckler & Koch MP5A3 with Navy trigger group and MP5F stock - 9x19mm
AFS officers bust into the stadium in "What Do You Think I Was Trying to Say?".
AFS officers aim their MP5s at the Exodolls for no reasons, other than this was an attempt by Director Seiichi Kinoshita to
breath life into the final episode.
Another angle of the MP5A3s aimed at the stadium stage.