Parts Ordered so far

I have just ordered the following parts for the project from ebay, initially will be trying to keep this project as cheap as possible.

Mini Servo - Trigger actuation if not using a servo switch

2m USB Cable - to link to the servo controller when purchased

USB Webcam - Cheap 5m webcam from hongkong, purchased one with IR to enable night vision

Laser Pointer - For testing motion tracking and for coolness of being laser pointed before you shot!

Need to get:

Servo Controller

A "Gun" - Probably will be a cheap electric BB gun initially.