The three most common AEGs on the field are the AR-15 series (such as M16 rifle, M4 carbine, etc.; sometimes referred to as the ArmaLite or Colt series), the H&K MP5 series, and the AK or Kalashnikov series.
Medium price electric guns: Some companies - like UTG with their popular MP5 and AK-47 models - have improved their quality to such an extent that some models are now considered simply as mid-ranged AEGs that are more affordable but still reasonably effective.