I check the condition of every weapon every time, at the moment I take control of it.
Drop the magazine, look at the number of rounds, re-insert it, press check.
Or empty the magazine well, double check that the magazine is empty, open the chamber and look at it.
Every time I take control of a weapon that has been out of my control.
I don't shoot with folks who don't.
"Huh?" --Jammer Six, 1998