Perun ETU MOSFET for Kriss VectorPerun for KRYTAC KRISS VECTOR Perun for Krytac Kriss Vector replaces stock electronics in Kriss Vector airsoft replicas made by Krytac company. It provides lots of additional features, including active braking and full cycle control (making sure that each cycle is finished, even if the trigger is pulled very briefly). Feature description Freely programmable firing modes Set any firing mode you like on any of the selector positions independently.