Here is the Droid Launcher that I picked up at Toys-R-Us here in Indianapolis, IN. for $10.99 each.
The Destroyer Droid is the same as the one that comes in the Droid Army 3-pack.
The launcher has a strap on the inside that comes out the back. When you pull on the strap it launches the droid out the front.
A side view of the Rolled up droid with the launcher in the back.
Not really that interesting of a toy for adult collectors but a nice thing for kids to play with. Of course I am a big kid so naturally I would buy at least one for my completist collection.