Amends the rule to prohibit the possession or control of any firearm, ammunition, explosive substance or any instrumentality customarily used or designed to be used as a dangerous weapon as defined in Section 790.001, F.S., by inmates without authorization and supervision of authorized personnel. The rule is also amended to prohibit the introduction of any firearm, ammunition, explosive substance or any instrumentality customarily used or designed to be used as a dangerous weapon as defined in Section 790.001, F.S., into or upon the grounds of an institution.