From that article:
The level of premeditation is unusual and crystal clear from his mass buying of guns and the cautious systematic smuggling operation to ferry them to his room together with the illegal modifications and the position of the room he chose and occupied for several days beforehand.
What are those? First I've heard this.
I had the same reaction when I read it. I think the author didn’t realize that adding a bumpfire stock is not illegal, or he thought they had been illegally converted to true full auto.
