Also dropped lvl 75 shells with mods in them must have an armoring in them... you can pull out any other modification, but if it has no armoring, it won't let you deconstruct
True, but it's worse than that. If you have the right crew skill on that character, you *can* deconstruct it, and it deconstructs as if it is Grade 1. (No-armoring guns yield Desh and junk like that if you have Armstech, etc.)