The lights are on
In conjunction with Warner Bros.' upcoming Batman: Arkham Origins, collectible creator NECA has been commissioned to create something special. This prop grapnel gun is spring-loaded and motorized. Probably best to keep it away from the kids.
You'll be able to pick it up this fall for $34.99 exclusively at Gamestop. The release date is currently listed as November 11, 2013.
Full disclosure: Game Informer is owned by GameStop.