People who work in the car industry find a lot of weapons left behind by cops that don't seem to care, or account for, the guns they have, have signed out, or have in case they need to plant on innocent people they need to frame

That's a Ruger 9mm.

Ford dealerships see a lot of cops guns, and rental car agencies see a lot of FBI, Secret Service, Border Patrol, etc.

About 8 years ago I posted the stories I got from the rental car manager, the kilo of coke, the uzi.
https://justacarguy.blogspot.com/2010/10/things-left-in-rental-cars-and-found-by.html
and the cop that forgot the AR 15 on the trunk. https://justacarguy.blogspot.com/2011/07/ever-forget-something-on-your-car-its.html

https://www.reddit.com/r/Justrolledintotheshop/comments/ekxxb1/working_at_a_ford_dealership_the_amount_of_times/