Not sure about any outlawing of weaponry, but magic seems to have some restraints. Mages Guild aside, I tend to recall the rumor topic in which one mentions that
"...it seems like a bad idea to buy discount spells". Let us not also forget alchemy, which seems to be a relatively esoteric practice with emphasis on safety and more commonplace effects of ingredients. Indeed, however, Cyrodiil has some interesting restrictions on spears, crossbows, medium armor, levitation, recall, pillows (that aren't permanently glued onto the beds, presumably they use the same substance used to keep everybody's underwear on), falling wizards, earthly delights, conventional methods of travel, books that actually are easy to stand up, and- well, I'm rambling. This is only about weapons.
EDIT: Oh, and don't forget about that fancy Romanesque Legionnaire armor that they wore in Morrowind. Probably just ceremonial and a way to intimidate those conservative Dunmer out west, but oh well. Mass-produced rusty metal armor is where it's at.
I mean like in real life, is there any kind of control on weapons like?
Ambiguous fantasy weapons don't kill people. People kill people. I'm glad we don't have an equivalent for Soccer Moms and the like running around in Tamriel.