Perun Airsoft are working on a MOSFET for the Krytac KRISS Vector AEG and they expect it to be available by the end of the year... "By the end of the year we plan to release a dedicated drop-in mosfet for Kriss Vector AEG by Krytac! We will let you know as soon as we have a more precise premiere date.
The unit will have all features standard for Perun mosfets:

• freely programmable firing modes for each selector position, including binary,
• adjustable active braking
• precocking
• spring drop
• full cycle control, making sure that each cycle is finished, even if the trigger is pulled very briefly
• RoF reduction
• diagnostic system
• electronic fuse.

A few words about the overall design: optical selector detection will be used instead of switches, while switch for the trigger remains. Only the main electronic board is being replaced by our electronics, so installation of the mosfet will be very fast and easy. The gearbox doesn't even has to be opened during the procedure. Multicolor LED can be seen after removing one of the main pins."