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See the firing rate differences in that same article. The shootings using a bump stock have a fire rate disturbingly close to automatic fire, far exceeding semi automatic fire. This makes a huge difference in terms of outcome, when terrorists like the Las Vegas shooter kept multiple weapons on hand in order to avoid spending mere seconds reloading.
Leshaches-
I still think it's pissing in the wind.
The Las Vegas shooter does not seem typical, and I still think the very fact that he had numerous loaded long range rifles was the issue. Not that he had a stock that increased the rate of fire.
It's mental that you can so easily carry a large number of what are effectively military grade weapons (albeit a single functional downgrade) into a city centre hotel.
hugo7
Far from an expert, but from a couple of the videos I watched after the original shooting I'm not sure I see them as markedly more dangerous.
In that NYT article I think it said the Las Vegas shooter had something like 6 loaded rifles in his hotel room?! That's the issue. Not whether there is a mechanism to make it less tiring to pull the trigger.