Converted my son's rival gun to a 4s lipo, velocity is insane, it leaves drywall marks :)
Stalled out the motors with a jammed dart and blew up the MOSFET. Glad that this was the failure point though.
This was a very cheap and easier alternative to a traditional Mosfet setup, I was very pleased! It is fantastic for my 3s Ultra 2, and while I had to strip the wires down a little to get them to fit, it worked first try and has been holding up ever since. It's worth noting that there is not a video on the OutOfDarts channel specifically for this product yet, which would be helpful for up-and-coming modders, but it did have very clear markings on it, so if you know what you are doing you will have no problem.
This is crazy small! Works perfectly though. Ordered several of them and all of them have worked and are working with out issues!
It's a must have for high current motors if you can't use high current switches