Why don't you take a look at New York City gun laws compared to New York State gun laws.
I grew up in Long Island -- in New York and the surrounding states (New Jersey, etc.) -- many cities had more restrictive gun laws than the state.
Sure but that’s not countervailing laws.If a state law says all citizens will a right buy, possess or carry a class of gun a locality cannot oppose that positive law. Now if Colorado say tailored their law to say handguns then under the right state constitutional circumstances a locality could theoretically restrict other classes of guns.