I watched the show and was disappointed. It was marginally educational, but spent most time on:
Machine guns are BAD BAD BAD
Machine guns KILL KILL KILL
Machine guns OPPRESS OPPRESS OPPRESS
They gratuitiously threw in the Holocaust, when the involvement of machine guns in murdering Jews was minimal. The SS Einsatzgruppen in the USSR in 1941 shot hundreds of thousands of Jews, gypsies and Russians, but they usually got a bullet in the back of the head.
They spent no time whatsoever on any sporting or legitimate defensive use of machine guns.
Was very disappointed. The "metal storm" machine gun at the very end was interesting, but they spent about 47 seconds in a less than detailed examination, when it is actually a very radical concept. Also, a factual error: they claimed that the inventor intends to target the "civilian market in the US", despite the ban on post 1986 machine guns.