M625 Revolver
The M625 is like the average Joe of guns. It's not the best, but it's not the worst either. It hits harder than the M9 and doesn't let you down with jamming.
Found the M625 in a house and thought, 'This is better than that M9 I've been using.'
I used the M625 to take out a group of zombies and it didn't even complain.
This gun is like my friend, not the most exciting, but it's always there for me.