Missing item in Decoy set?

[Skullcruncher]

This is the one in the second set (the one being asked about) -


Each of the three sets have one, but are different shapes (same colour though). The one above looks a little like the starfighters in Battlestar Galactica, while the one in the 1st set oddly enough looks like a Cylon fighter. The one in the 3rd set looks like a blocky-looking robot.
You push in the white bit at the end, and press the white tab on top to release it (while it is placed against the decoy you want to project at others).

Ah ok thanks for this - will keep a look out but don't like my chances of finding one!