Owners of the Double Bell 813S AEG can check this video from Pheas Airsoft as a guide when doing maintenance or repairs. This AEG has steel parts such as the magazine, flash suppressor, magazine catch, safety selector lever, bolt catch, charging handle latch, and pins. The outer barrel, handguard, and receivers are made of metal alloy. The stock and pistol grip are plastic. It has a Gearbox v2 mechanism with a quick spring change system on 7mm steel ball bearings. It also has a new polymer hop-up rotary chamber and a sealed aluminium nozzle.