The China Lake is an American pump-action grenade launcher featured in the four Call of Duty: Black Ops Nazi Zombies maps Kino der Toten, "Five", Ascension, and Call of the Dead, Shangri La , and Moon . It is very effective for clearing out large waves but disorients the user after firing too close, and the slow pump-action can severely cut down the effectiveness of the weapon. Slow reload times also force the player to wait longer to load two more grenades. Overall, it is a poor choice for close-quarters combat and is frowned upon by many players.