Clifford was elevated after starter Jordan Love went down with an injury.
The Collegian said it wasn't given prior warning from the university that the newsstands would be removed.
Turning Point USA officials said Penn State shut down the event despite their permission to speak. Penn State said the group did not have proper permission to use amplification.
Turning Point USA previously visited Penn State on September 19.
The university allegedly paid 65 female employees less than men holding similar positions.
The 9mm firearm was loaded with nine bullet, including one in the chamber.