Although we've seen gun-motes for the Wii before, a Chinese company at the show has upped the firepower with a 1:1 scale Heckler & Koch MP5 sub-machine gun for the Wii. However, rather than using Nintendo's own controllers for the gun, the company implemented full Wiimote, nunchuck - and - MotionPlus functionality into it. With a built-in rechargeable battery that juices up via USB, it boasts a built-in speaker and it will rumble when you get hit in supported games.
The image above is shown for the US market (because pretty much if you don't have the orange tip you'll get mowed down by the Police here, doubt there's a tip in Japan, guns are illegal there and everyone assumes all guns pointed in their faces are toys). This peripheral is not only very tempting to use in games, but it looks really good and of the highest quality for plastic (something I don't say often about Chinese made products). I'll be sure to import one if it's never officially released here.