Star Wars: Episode 3.5 "Rise of the Rebellion"
Concussion missles are standard missles with a high yield explosive warhead that explodes on contact with the target. Unlike Proton Torpedoes, which are wrapped in a visible proton sheath that illuminates the torpedo and adds force, concussion missles are hard to spot in the darkness of space.
The explosive warhead features an impact-sensitive detonator that triggers a high yield beryllium-based explosive, similar to the effects of a thermal detonator. In addition to the normal damage the explosion inflicts, the warhead is designed to induce a concussive shockwave that ripples throughout the super-structure of the target, forcing the target to flex i n ways it was not meant to flex and causing structural integrity to fail.