I order my springs direct from wolff, I use a 30oz trigger and an extra power base pin latch. I also have used the brownells round hammer strut and that does smooth the hammer pull, it comes with a 17lb spring but you can replace it with an extra power hammer spring if you wish. I've done all of my rugers this way and am also going to install them in my reeder customs as my blackhawks are smoother than they are.