A buddy of mine was our county CO from age 23 until he retired a couple of years ago...His first issue gun (a GP 100) locked up so bad they had to send the weapon LOADED back to Ruger as the cylinder would not even come out....When he got the gun back a very small seed had gotten into the mechanism and locked it up...He said he has no idea how long he was carrying it with it being unable to function...He had no idea how many arrests he had made with it being unable to function...Ruger sent the tiny seed back with the gun and he still has that little seed to this day as a reminder to how small the difference between coming home or not coming home can be...
This was back in the 80's and at that time CO's maybe had to qualify once a year IIRC and he had no idea how long his Ruger had been a boat anchor instead of a defensive tool....
THIS is WHY you CLEAN, inspect, and SHOOT your duty, carry and back up weapons.......