I have an STI Executive .40 the recoil spring is actually 2 springs called "recoil master". What is the advantage? Also working the slide by hand all the way back I can feel the "rubbing" of the springs inside the spring tube. I have compared the rough feeling of my slide with a SVI and a STI Edge, both without the recoil master, and they are very smooth. Any comments or thoughts on this "new"(?) system? Thanks
icecold
icecold