This is an upgrade anyone can use. You don't have to run a high voltage or lithium-polymer battery to get the advantages of this system. In the event of a direct short or severe voltage spike, current to your motor is cut off quickly. This protects both your battery and your gearbox from further harm. After the fuse cools down, the gun is able to function again. No more hunting for fuses or having to bum spare ones off or your teammates!
Price: $5