The M14 is a weapon in Call of Duty: Black Ops, and all five zombies maps for Black Ops. It is located on the wall in the first room and can be ourchased for 500 points. It is an effective weapon on rounds 1-4, then loses its effectiveness due to its low damage and eight round magazine.
In the Nintendo DS version of Black Ops, the M14 can be bought off the wall for 1800 points.
When Pack-a-Punched, the M14 becomes the "Mnesia," obtaining a larger magazine and more power.