Just watch a couple YouTube videos, it explains it there. This unit doesn't reset your trigger. Once the striker is released, this unit basically takes over the trigger operation. With every trigger press your moving that little spring on the magazine (a couple different weights included), and it's a fairly "clicky" feeling. I don't have one, but from what I hear it's not the greatest feeling. Now I might pick one up since they are a much better price, but I don't know how much of a help it's going to be. I hope that helps.