A bump stock arguably makes it full auto, but it doesn’t make it a machinegun.
Arguably the reason this thread is confused is that the word ‘machine gun’ doesn’t refer so much to physical characteristics, but more to a usage: they’re meant for sustained covering fire rather than short bursts.
An AR-15 with a bump stock meets all the technical requirements of a machine gun.
A bump stock arguably makes it full auto, but it doesn’t make it a machinegun.
Arguably the reason this thread is confused is that the word ‘machine gun’ doesn’t refer so much to physical characteristics, but more to a usage: they’re meant for sustained covering fire rather than short bursts.
They are being under federal law because of the machine gun statute.