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 that enforces or attempts to enforce a act, order, law, statute, rule or regulation of the government of the United States upon a personal firearm, a firearm accessory, or ammunition that is manufactured commercially or privately in New Hampshire and that remains within the State of New Hampshire shall be guilty of a class B felony. (emphasis added)