The Avalon M4 Airsoft AEG series from VFC (Vega Force Company) represents the most advanced quality and performance when it comes to airsoft guns. From their robust metal constructed receivers, rail systems, ambidextrous user functions combined with the sleek and modular QRS adjustable stock, pistol grip and mid-cap magazine; the Avalon is the last Automatic Electric Gun you will need. Internally, the ECS version 2 gearbox leaves little to be desired. 
The quick change spring function along with the neo-magnet high torque motor, tight bore barrel and gearbox housed mosfet system; shines in field performance and will be sure to turn heads. 
You have your choice of M-LOK rail length; carbine or CQB, and your choice of black or a beautiful bronzed tan option. 
Additionally, the Avalon Airsoft series from Elite Force Airsoft comes with a 1 year warranty making sure that in the rare event that you need it, you can continue to stay in the game with the AEG that gets you to your next objective.