Something smells with this article.
Lou Dobbs had this story on a few months back, seems that with certain sensitive-primer ammunition they could get the AR to double, and it had some (but not all) FA parts in it (from the factory, IIRC)
Yes, because it's full of half truths and outright lies. See below.
Pay particular attention to Item 7 and Item 10 and Item 12 and Item 13 and Item 17 and Item 20 and Item 23. Read those items over thoroughly. Olofson had installed a 3-position M16 selector, which is a real no no. Whatever else was installed or modified internally is known only to the immediate participants.
A stock factory AR15 was modified with an M16 selector at the very least, and quite likely other parts changed or modified. This is a federal crime.
This is an issue that NOBODY concerned about this case will acknowledge or admit to. Instead, everyone goes into Hyper Rant Mode about Second Amendment issues and JBT's.
The sad fact is, he illegally modified an AR15 and loaned it out to some nimrod who didn't have enough sense to leave that third selector position alone at a public range.
Absolutists are in Full Meltdown Mode on most of the gun boards, and refuse to acknowledge that Olofson violated any laws.
It's not the first time ATF has pulled crap like that.
That would be the BATFE.