Though I'd share this. It's something I have been working on. It's a full size M4 Carbine Wii zapper made from an airsoft M4. It has the B button wired to the M4 trigger. There's also an "A" button on the forearm. It has a wireless nunchuck which is strapped to the vertical grip of the M4. All buttons on the Wiimote are accessable.
http://www.youtube.com/watch?v=BA-mD...layer_embedded