M-12
this was the designation of a class of Imperial sweep bombs manufactured for use by Kuat Drive Yards. The M-12 was a notoriously poor performer in the field, with a failure rate of nearly ten percent. This meant that most Imperial unit demanded a better model, and much of the production run of M-12 bombs was scrapped. They were eventually replaced by devices which had gravity-wave systems built into their casings. However, some twelve million M-12 bombs were never shipped to the Imperial Navy. They were retained by Kuat Drive Yards for testing the armory chambers of their starships.