The WA 2000 is a semi-automatic sniper rifle with a 5-round magazine. It is unlocked at level 10 in multiplayer. It one-shot kills in the upper-chest and two-shot kills in any other case. It is extremely stable as it has almost no recoil.
The real WA 2000 was manufactured by Walther, West-Germany and was first designed in 1970. It fires NATO 7,62mm rounds, weights 7kg and has a range up to 1000m. The WA 2000 was costly to produce and less than 200 were ever made, making it extremely prized by collectors.