It's not terribly hard to get it out. It's a leaf spring set up much like a Glock. You have to push the release a bit and take a pick or a small screwdriver and pry it out of the little slot in the release. Once it's out the release with just slide out.
Then you take a needle nose and pull up on the spring and it should come out. I've not heard of them weakening but doesn't mean it can't happen. I don't have a C only K's and my PM45 but I'm sure the C is the same as the PM.
Keep us posted.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."