Dunno about Oklahoma, but Kennesaw, Georgia, does have a gun ownership requirement, passed in 1982 in response to Morton Grove, Illinois, banning handguns. Kennesaw's neighbor, Acworth, is the one with the rake ownership requirement -- passed in response to Kenneswaw's gun law -- though it is not immediately clear to me whether that ordinance is still in effect.
Kennesaw's law allowed for conscientious objection and had no penalty for non compliance so it was effectively dead when passed but did make quite the splash in the international press. Crime rates in Kennesaw did drop significantly after the law was passed but the same was true for surrounding communities without the law, most likely due to them becoming affluent bedroom communities for Atlanta's white collar class.