Going the other way was Darren Gisti.
McCullough saw action with the Capitals minimally last season and spent the majority of the season with the Southwest Cougars in which he put up 35 points (17 G, 18 A) in 41 games.
"McCullough has good size, skill set, and speed," said Head Coach and GM of the Kings, Marc Berry. "He'll fit into our group right away."
The Kings will now hit the road to take on McCullough's ex-team, Virden on Friday evening.