The Karabiner 98k ("Carbine Model 1898-short") is a sniper rifle featured in Sniper Elite V2 and Sniper Elite III available through Assassinate the Fuhrer and Sniper Rifle's Pack, respectively. It is also featured in Zombie Army Trilogy.
A camouflage variant is available through the International Camouflage Rifles Pack as well.
Sniper Elite V2
The German Kar 98 has the highest zoom of any of the available rifle. A lower muzzle velocity requires some compensation from the user at long distance, and the bolt action mechanism slows the rate of fire.
Best Zoom, lowest rate of Fire and low bullet velocity. Decent Damage. It is a bolt action rifle with a 5 round magazine.