Ok, so you bought a CZ 75 SP-01. (Or pretty much any other type of CZ Pistol.) Now you want to use it for competition, or just want to make it the absolute best it can be. There are a few things that you need to do to it. First off you need to replace some springs.
The factory recoil spring is an 17-18lb spring depending on who you talk to, but for it to be more accurate you need to replace this spring. The reason why is because the factory spring slams the slide forward so hard, it brings you down and off target. You'll want a lower poundage. I used the 11lb spring. They range from 10-15lbs.
http://czcustom.com/CZ-Recoil-Spring-11Lb.aspx The factory Main/Hammer spring is also about a 17lb spring. This spring controls the amount of force needed to pull the trigger in double and single action. Replacing this spring with a lighter one will result in lower poundage needed to actuate the trigger and fire the gun. Mine went from about 6 to about 4lbs in double action, and about 3lbs in single action.
http://czcustom.com/CZ-Mainspring-13Lb-3-PAK-1.aspx You'll still notice that even after these mods there is a good bit of takeup in the trigger before it will fire, this can be remedied by putting in a competition hammer. It has a slightly different shape than the factory hammer and may need to be fitted for your gun. (As of now, I have the hammer, but haven't yet put it in.) You'll need some things for this installation:
First, the hammer itself:
http://czcustom.com/CZ_SA_DA-Competition-Hammer.aspx A 1/16th prick punch to start removal of the pins in the hammer/strut assembly:
http://czcustom.com/czstarterpunch.aspx And a 2mm punch to press the pins the rest of the way out. (This punch also helps with disassembly/reassembly)
http://czcustom.com/czmspinpunch.aspx Here is a video of how to disassemble/reassemble the weapon so you can do all of this: (Its not specifically for the SP-01, but its 99% the same.)
The only thing not shown is how to press out and reinstall the pins in the Hammer/Strut group, but if you look at it and can't figure it out, then god help you. I have to run out to Northern Tool and get my starter punch, then I'm going to do mine. I hope this helped anyone who was in need of ideas on how to better their weapon.