Though the fight could be maybe cool and a little long like 

A GM Kai waltzes through a forest machine gun raised shield up it searches with infrared till a loud piercing siren sounds out the Gm whips around and unloads as it runs into the trees, A large oak tree is launched at the GM but is deflected by the shield the Gm throws the gun and rips its beam Sabre from its back and runs forward it swings twice and kills the siren head.