OneShot
From Videogame Interface Wiki
The OneShot is a unique combination of standard controller and lightgun, designed for first-person shooters.
It switches between two forms. One form looks like a standard controller, with two analogue sticks and some buttons, but by twisting it it becomes a gun shape which works as a pointer/lightgun. This lightgun mode fires an infrared beam at the screen, that is detected by a separate camera.
See Also
- OneShot X
- OneShot FPS Controller Youtube channel