Just saw it on Discovery Channel this morning. It's an Israeli-made weapon which combines a camera system and a firearm and allows the user to fire the weapon from behind cover without exposing him to hostile fire.
It's a good idea but I'm just averse at seeing a weapon bending that way.
Personally, I would prefer a small rifle-mounted camera that would broadcast wirelessly [through bluetooth perhaps] images to the user's visor-/helmet-mounted monitor. It would be simpler than what I see in the Corner Shot's design and can be applied to existing weapons rather than them having to be tailored to fit the new technology.