The Ghost Rocket is not a trigger bar, it is a connector. BIG difference. And yes, it does make a big difference doesnt it? Now if you want more big differences, change out the drop safety plunger spring and round the drop safety plunger off. You COULD change the trigger and striker spring, but I'd stay stock just for reliability. With all of that done, it's under 2 pounds.
The break does get mushy with this upgrade and some may not like it. I do.