For anyone thats interested, I recently made some additions to the MP5 Wiimote in order to make it a Gyroscopic Virtual Reality MP5, for the PC not just the Wii.
I'd also made some minor alterations to the original design, recessing the buttons on the foregrip and doing away with the unsightly silencer attachment.
The post about it is on my blog,
Impracticality.

(not pimping, honest guv).