Remember when we had no fear with our toys?

Auto Ordnance Company manufactured a California compliant, legal "Tommy Gun" but i don't know if they still do.
Been a long time, since purchasing firearms.
A empty Tommy Gun weighs around a bit more than 10 pounds, bare, no magazine.
Add a round drum, of fully loaded 100 rounds of 45 ACP and then you have a really heavy firearm.
A 30 round magazine stick, is used on another variant of the Tommy Gun, which is quite manageable.
At one time you could go up to an area near Reno, Nevada, and rent Thompsons, with either sticks, or drums, at was called automatic shootouts.
Auto Ordanance sold drums or sticks, with only 10 round capacity, which is legal out here in Commiefornia.

Don't wan't to take the OP's posting off the railroad track, but i stuck my reply here.