Compensator is adapted for assault rifles AKM/AK in caliber 7,62/5,45 mm. In fact, it performs the function of a flash cover, muzzle brake and compensator synchronically. The first camera is like a flash cover and muzzle brake compensating tossing barrel up and right by reactive force of powder gases directed through a nozzle in the first chamber. The second camera used for compensating impact, sending the powder gases in opposite directions so that their total impulse reached zero. Depending on the style of shooting, stands and grip, compensator can show excellent results.