"Did you know that the model letter for the Thompson SMG magazines, XX, XXX, L, and C indicates the capacity in Roman numerals?"
In old FBI inventory records, the 100-round capacity drums are noted as being CEE drums.
"One Japanese design used a hopper, with the standard rifle 5rnd stripper clips stacked in it. (for a variety of reasons, not very successful)."
The primary reason it wasn't very successful is that Kinjiro Nambu was a nutsack who could never get it through his head the need for a primary extraction cycle that would ease the case free of the chamber instead of just ripping the head off and leaving the body as a jam.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.