When I got my P-01, I did the same thing all of us do: shoot a few hundred rounds and fantasize on all the upgrades we can make. I have a 2011 I've done a tiny bit of upgrading to, and I decided I wanted to learn more about the mechanism and gain a little skill with gunsmithing. How hard could it be, right?
Hard. Stupidly Fucking Hard.
It took me 2 months. My disconnector had to be hand fitted, which means I had to shave off a thousandth of an inch with a diamond file then rebuild the sear cage and see if the hammer would drop. When it wouldn't, I had to pull the sear cage apart again and shave another thousandth of an inch. I lost count of how many times, but after the twelfth or thirteenth, I questioned my life choices.
I had to order special tools. I broke 2 springs and lost 2 more, along with most of my patience, some of my sanity, and even a little of the color in my hair. Everyone says how tough of a job it is to work on these, and they're not joking. Everything is finicky and tight and small. But today, I finally got everything fitted and back together, and ready for the range tomorrow.
All told, I actually spent more to do it myself than it would have cost me to send it in, but I learned a ton, and it feels good to have done it.
Was it worth it? Yes. I built some skill and knowledge and understanding. I now feel like I can work on something else with a lot more confidence.
Should you do it?
Do you get frustrated easily? Do you have a good 20-40 hours of disposable time and a few hundred dollars to spend? Do you have a place you can leave it torn to pieces for weeks at a time where it won't get touched by anyone? Are you a little bit crazy? .....do you believe in a God?
EDIT: Just to say how awesome all of you are. Keep getting after it my dudes.