Bipods are a weapon attachment for Machine Guns seen in Call of Duty: World at War. Bipods were seen on some weapons in the Nazi Zombies gamemode on the maps Nacht der Untoten and Verrückt (but only on the World at War versions).
The Bipod was used to give the player better accuracy when firing. However the Bipod could only be used in certain places.
A glitch was found were the player could use the bipod in to get unlimited ammo (this is why the bipod is not on any guns in Shi no Numa and Der Riese except the BAR and the FG42 were it can be seen but not used).