Time-Portal Gun

Time travel gun is a energy weapon-esque device that shoots portals that allow travel through time and space. They were given to Donut by Chrovos, who in turn passed them to the Reds and Blues.

The portals, also called "Donut Holes", can only fit two grown men at once, and exceeding this capacity returns the group to the present. However, the same amount of time the wielders spent on the past will have passed in their home period, as demonstrated when Sarge and Simmons discover one year has passed since they left, during which the Reds and Blues were deemed disappeared.