I just bought my first pistol ever and it is a CZ75-spo1 shadow. I did quit a bit of research on pistol's to make a good choice and i think i did. I read a lot's a good stuff about the shadow, i like the full steel frame, the fit of the gun in my hand, the balance of it... just a great gun! but now since i discover that forum, i don't sleep. I'm reading everyting about the 75 model's. so i order some new hammer spring, recoil spring, guide rod,hammer,firing pin... but now i have a question; what can i change on the gun to stay in ipsc production?