Authorizing cities and counties to regulate the sale and purchase of firearms and ammunition within a building owned by such city or county.

HB 2127 amends Kansas law to explicitly permit cities and counties to regulate the sale and purchase of firearms and ammunition within buildings they own (such as city hall or county offices). This change directly affects local governments by allowing them to implement rules for firearm transactions in their own facilities, while leaving broader state prohibitions on local firearm regulations intact. The bill adds a specific exception to existing law (K.S.A. 12-16,124), overriding prior restrictions that barred such local rules. It does not authorize general city or county regulations on firearm commerce outside of their owned properties.