make sure you put a key into the barrel before removing it!! otherwise the pins fly everywhere (you'll lose them & the tiny springs)
I did that with my last car. But then figured if I took all the pins out of all the other locks, one key would fit all rather than the 3 keys that I had before.
Trouble was, any key would fit. So would a knife, a spoon, a twig, if fact anything could unlock my car.