Could be something else. Did you try the pencil trick?
Put a pencil down the barrel, eraser end first. Pull the trigger, if the firing pin is moving at all, it'll launch the pencil out. if it's not the pin and it's the spring, you'll at least see a weak indentation on the eraser.
It's all good. Same thing happened with my wife's cheetah, thankfully got a pin for it.
Edit: just reread, isn't even hitting primer. you can take the slide off and push the pin, see if you can see it. Could also be something fouled and in the way.