Not Supposed To Look Like This

That's not a miniature machine gun or camera protruding from our front door lock. When I removed my key after unlocking it this morning, I heard and saw small metal pins and springs flying through the air as this cylinder came out with the key.

Cynthia had been reminding me for some time that it looked worn, and it was on the lower end of my lengthy to-do list. Now it's moved a lot higher!