In an effort to improve his Call of Duty gaming experience, Reddit user [Harbingerx81]built a custom controller out of an Airsoft gun. Not only does this gun feature all the buttons and joysticks normally found on a stock xbox controller, it’s also loaded up with accelerometers and gyros so his on-screen character points his gun wherever [Harbingerx] points his gun.
From the imgur album, we can see that [Harbingerx] modded an Airsoft gun with a few buttons, d-pads, and switches optimized for Call of Duty. What really gets us is the clever use of accelerometers and a gun-mounted HDMI display (with a wireless HDMI adapter) to provide a home-made virtual reality setup for one of the most popular games.
Building this controller/display wasn’t cheap – it cost [Harbingerx] upwards of $600. A good price, we’re thinking, since the Oculus Rift will be north of $300 along with the added cost of a gun-shaped xbox controller.

http://hackaday.com/2012/09/16/gameg...ore-immersive/