Different regions vary in the velocity airsoft guns are allowed to shoot at. In the United States, velocity differs from the type of gameplay field. Close Quarter Battle arenas typically regulate velocity on airsoft guns at around . For outdoor fields, velocity is usually regulated by the type of gun. With a standard pellet, fully automatic Airsoft Electric Guns (AEGs) are often set at less than , semi-automatic DMR-style AEGs at , and bolt-action (manually cocked spring-piston) sniper rifles at .