Now I know in game the turret uses a “scanning” laser to find its targets but for my design I have chosen to use a ring of red LED’s with the projector lens situated in the center. This was because of safety concerns about having an unattended laser when the turret is out on demonstration.

This is the LED array on the prototyping board. 8 LEDS driven from a split 12v source and controlled via a NPN transistor.

LED locating ring made using a 3d printer.

All soldered into place and lit up!