For those new to MOSFETS in airsoft, ADDZZYs Armoury got this video showing how to program the Perun V2 & V3 hybrid Airsoft MOSFETS... "Adzzzy talks about how to change all of the settings on a Perun V2 and V3 Mosfet. Covering how to understand the programmer card and what each of the features does. Fire mode, Active breaking, Pre Cocking, Rate of fire, Binary Trigger, burst mode, DSG, lipo protection, trigger sensitivity,  Quick over view of what the mosfet looks like and how it works."