Don't waste your money on any of that stuff. If you are even slightly "handy" you can do all the work yourself on the stock components and come out with a better, way cheaper trigger. Adjustable hammer and sear, polished etc. for next to nothing. You need a drill or better drill press, taps, abrasives and a propane torch. PM me for the instructions if you want them and get to work! And the nice thing is if you screw it up you can still buy the aftermarket stuff and put it in. Oh yeah, I forgot torsion trigger return spring also.
Kim