Fox Airsoft show the ICS Airsoft CXP MARS S3 line up that they have available in store... "ICS has released their new S3 gearbox. The S3  or Self-Diagnostic Shooting System gearboxes feature a host of options built into a programmable MOSFET. The S3 is available in the MARS series rifles and retains all the cool features you get with all the CXP UK1 guns."