Here’s what she’s talking about:
Simulated Automatic Fire AR-15 – The Slide Fire SSAR-15
http://www.gunsamerica.com/blog/slide-fire-solutions-ssar-15-bump-fire-device-ar-15/
I don’t see any utility in the Slide Fire SSAR-15, other than making a lot of noise. Even for a psychopath who wants to make the news as a mass killer, it looks like a chance to jam the weapon after fewer aimed shots, or to waste ammo with fewer shots hitting a person. I would be far more concerned about a trained shooter with a stack of 10 to 30 round magazines (clips for those who have never touched an evil 12 gauge AAK-47 fully-automatic assault shotgun) than about a moron with a Slide Fire SSAR-15 and carrying an equal weight in 100 round drums.
They should not be banned - the Second Amendment means what it says - but I can’t see why anyone would want one.
Good for wasting ammo. The military eliminated the full auto function from their M16A1 for the semi-auto and 3-shot burst of the newer versions.