This is frustrating the hell out of me and I'm sure the squirrel guy is going to be mad at me.
I don't have armoury_entity in my FGD list.
I have not successfully placed a weapon laying on the floor in a map by manually naming my entity armoury_entity. (when I do that the entity icon turns into a dude giving me the thumbs up with the word obsolete below him).
I just want a stash of weapons laying in a room in my map.