[Prickle]

To my understanding, Machine gun licenses are still sold in the US on extremely stringent terms.

Some, like the famous American 180 (Otherwise known as the Angry Bees) are grand-fathered in and allowed to be used.

[hunter-gatherer]

You mean a class 3 transfer stamp. One can legally own a class 3 firearm in the US, yes. There are extra requirements for background checks, storage and so on. Machine guns in particular are expensive and fall out of most people's purchasing power. Ammunition is another thing entirely. For example, this Galil is 23k[1].

1. https://www.gunbroker.com/item/985068083

[technothrasher]

> You mean a class 3 transfer stamp.

You mean an NFA transfer tax stamp. Class 3 SOT is a status given to certain FFLs to allow them to deal in retail sales of NFA restricted items. It does not refer to the NFA items themselves.