M625 Revolver
The M625 is a gun that's like a good friend, it doesn't always shine, but it's always there for you. It hits hard and doesn't jam, which is a nice change of pace.
Found the M625 in a cop station and said, 'This is better than the M9 I've been using.'
Used the M625 to take out a group of zombies and it didn't even complain.
This gun isn't the fanciest, but it's got the brains to back it up.