K.S.A. 50-1208

A county or district attorney, or the attorney general, may seek injunctive relief in any court of competent jurisdiction to enjoin any official, agent or employee of the government of the United States or employee of a corporation providing services to the government of the United States from enforcing any act, law, treaty, order, rule or regulation of the government of the United States regarding a firearm, a firearm accessory, or ammunition that is manufactured commercially or privately and owned in the state of Kansas and that remains within the borders of Kansas.