The AS36 from ARES is a family of AEGs patterned after a modern polymer bodied gas piston operated assault rifle. While ARES forgoes the 5.56mm round in favor of the 6mm BB, this group of AEGs still looks the part.
At its core, all the weapons are the same using the same internals and main receiver; where the specific models vary is the handguard length, barrel length and handle/rail/scope type. Some models also sport special accessories.
They clock in at around 360 FPS for reasonable mid range skirmish power and make use of a high capacity magazine of about 400 rounds. The realistic arrangement of the piston combines with the electric blowback for a realistic action. It might not kick as much as a gas weapon but for an AEG at this price level its pretty damn amazing.
The fire selector, magazine release and bolt charging handle are all ambidextrously accessible making it a good choice not only for left handed players but also veteran players in general who switch shoulders/hands on the fly.
The AS36K is the mid length shorter model, the carbine length version with the 12 inch barrel, 13 inch handguard but does away with the built in bipod (found on the basic rifle version). It features the full carry handle with built in zoom sight but replaces the rifles red dot with a flat top short rail instead (allowing you to use your own optics). The the folding stock helps quite a bit on this already carbine length model; the weapon is easier to handle due to the smaller size and with the stock folded it can even be used indoors (although perhaps a bit cumbersome compared to SMG systems),