Sub-Machine Guns

[dropzone]

@Kobal2

The advantage of the drum is that is holds a lot more bullets. So you can spray all day from that model T window, instead of having to change mags every 5 seconds.

A Thompson, on the low end, fired 600 rounds per minute, or ten per second. You’re spraying, not firing in bursts, so you literally need to change magazines every five seconds.