I like the SS guide rod. Range gun 4.5# connector, 6# trigger spring, 4# firing pin spring. Carry gun 4.5# connector, 6# trigger spring. I like the 15# ISMI recoil springs, some prefer the wollf springs. You MAY have light strikes with a 4# FPS if you do not use a lightened FP. If I can be of any assistance let me know.