Scrapgun
This weapon's design is... less than ideal. Cheap, certainly, but less than ideal. Add 1 UNRELIABILITY point.
Revolver shotguns are an old design. Oceanykan scrap-metal revolving shotguns, however, tend to look like actual revolvers, perhaps for the shock effect. These weapons tend to be chambered in 12-gauge, Oceanyka's most common shotgun cartridge. Unless one is unnaturally strong or a grown Ferozen man, shooting these weapons one-handed is not recommended.