M625 Revolver
The M625 is a gun that doesn't try too hard. It hits hard, doesn't jam, and it's easy to find. It's not the fanciest gun, but it's not bad either.
I grabbed the M625 and said, 'Okay, this is better than that M9.'
Used the M625 to kill a zombie and it didn't even bother me.
This gun isn't flashy, but it's good enough for me.