Opinion of Metro lawyers
13.24.440 Explosives, fireworks and firearms.
No person shall bring into or have in his possession in any park any firearms, slingshots, firecrackers, torpedoes, fireworks or other missile propelling instruments or explosives, including any substance, compound, mixture or article having properties of such a character that alone or in combination or contiguity with other substances, mixtures, compounds or articles may propel missiles or may decompose suddenly and generate sufficient heat, sound, gas or pressure or any or all of these to produce rapid flames, combustion or noxious or dangerous odors or sounds such as to annoy any other person or to injure any person or property.
(Prior code § 30A-1-9) found here Resolution RS2009-790 against Ch.428.Ordinance BL2009-489 against carry in parks.
I still haven't seen a sign at any Metro Nashville Park, but according to the AG they do not have to post signs. Even though their ordinance says they will post them...How confusing is that?