KWA Originals AEG2.5+ EVE-4KO: EVE 4 AEG 2. 5+ While the KO: EVE 4 AEG may look like just another M4, weve made dramatic improvements to the overall design and feel of this game changing AEG. The high strength, polymer receiver set and MLOK handguard is a pound lighter than her sister AEG, the Ronin T6. The side charging handle allows for convenient hop up adjustment and the integrated pistol grip is optimized for maximum ergonomics. The KO: EVE 4 comes with KOs new slim line