1. selling, manufacturing, purchasing, possessing any bludgeon, sandclub, metal knuckles or throwing star;

2. possessing with intent to use the same unlawfully against another, a billy, blackjack, slungshot, martial arts fighting sticks, or any other dangerous or deadly weapon or instrument of like character;

3. setting a spring gun; or

4. possessing or transporting any incendiary or explosive material, liquid, solid or mixture, equipped with a fuse, wick or any other detonating device, commonly known as a Molotov cocktail or a pipe bomb.

1. law enforcement officers, or any person summoned by any such officers to assist in making arrests or preserving the peace while actually engaged in assisting such officer;

2. wardens, superintendents, directors, security personnel and keepers of prisons, penitentiaries, jails or other institutions for the detention of persons accused or convicted of crime, while acting within the scope of their authority;

3. members of the armed services or reserve forces of the United States or the Kansas National Guard while in the performance of their official duty; or

4. manufacture of, transportation to, or sale of weapons to a person authorized under 1 through 3 of this subsection to possess such weapons.