This a letter to the editor of the Daily Herald in suburban Chicago. This gentleman was arrested because it look like he was running a gun store out of his house. He had 600 guns there. That is not the point of the letter from the Executive Director of the Illinois Council of Handgun Violence. He is trying to say that it would "Clearly, no reasonable concerned citizen should argue about the right to hoard 600 guns when weighed against the issue of public safety posed by such firepower sitting in the middle of residential community." Actually, it is quite possible that somebody could have a collection that big. The number of guns is not the issue, but what the intent of the owner is.
Six hundred guns in one residence?
I was friends in graduate school with a guy who collected Mauser rifles. He had close to 20 of them in his two bedroom condo. Also for a website of a man who has quite a collection of weapons, to include artillery, see:
Arghhh! The Home Of Two Of Jonah's Military Guys