K2

The K2 is an Assault Rifle, therefore it's also a primary weapon. Its main characteristic is the absence of a full-auto mode, which is replaced by a single-shot mode. The K2 is extremely accurate for an Assault Rifle, making it a perfect anti-sniper weapon, as well as a good close-quarters gun. Many players complain about the K2's lack of full-auto, therefore very little people actually use it. The other firing mode is a 3-round burst, which is more than effective at medium distances: 2 bursts and the target is dead. Some players that are new to the K2 set the gun to single-shot, then repeatedly click the mouse at close quarters, which is a very bad tactic, as most opponents are bound to carry an automatic weapon with them for defense.

Trivia
The K2 has been called the "M4 of the post-September era". It is also the only Assault Rifle available to all players on the 2nd page of the primary weapons Shop.