Animation Runner Kuromi
Animation Runner Kuromi is a 40 minute anime OVA from Yumeta Co. studios that centers around Mikiko "Kuromi" Oguro and her first week working as a producer for an animation studio.
The following firearms were seen in the anime OVA Animation Runner Kuromi:
On several occasions, Kuromi mentions an anime called Luis Monde III (a fictional series and a clear homage to the long-running Lupin III franchise) that she watched in high school and how it inspired her to work in animation. Most of these scenes include clips from Luis Monde III, which show the title character wielding a gold-plated Luger P08 pistol.
Fictional Machine Guns
Another clip from Luis Monde III shows the lead character dual-wielding a pair of fictitious belt-fed machine guns.