Players who want a slower, more accurate Kar98k for long-range encounters must sacrifice speed for stopping power. The best long-range loadout attachments for the Kar98k are as follows: Muzzle: Monolithic Suppressor. Barrel: Singuard Custom 27.6 

The best Kar98k Call of Duty Warzone loadout is:

Monolithic Suppressor.
Singuard Custom 27.6 3
Tac Laser.
Sniper Scope.
FTAC Sport Comb.