The IR remote controls the automatically reloading gun and the 360° turret rotation. The clip holds 12 rounds that are fired at a muzzle velocity of about 6.2 m/s resulting in a firing range of about 4 m.
The shooting mechanism is based on the yellow rubber bands that are installed like this. Instead steel springs can be used that are installed like this.
When adding another medium motor and using an S-Brick instead of the IR-receiver, remote control of the gun angle is reaily possible providing full remote control. The LXF file can be downloaded here.
Waiting for Inventory to load
Use LEGO Digital Designer to open these files and generate step by step building instructions.
This MOC also has a 3D digital file available (eg LDD, MPD, etc): 3D Model