Taiwan Gun show their line of CAA Airsoft AEGs that are made under licence by King Arms... "The CAA AIRSOFT M4 CQB is a nylon fiber airsoft electric gun (AEG) licensed by CAA (King Arms OEM). The official CAA trademarks on the nylon fiber receiver, handguard, and magazine. It' equipped with a 10.5" nylon fiber outer barrel, and the lightweight M4S1 Picatinny Rail System. The ergonomic pistol grip provides great comfort and better holding. The collapsible buttstock can be set to 6 different positions. The rubber non-slip buttpad with tapered angle allows faster shouldering and increase comfort with body armor. A QD sling swivel can be attached to 6 different sockets on the stock and handguard. The package comes with a CAA low profile Flip-Up Rear Sight and a CAA 140-rounds mid-cap Magazine. Mechanism of Gearbox v2 with quick spring change system, steel gears mounted on 7mm bushings."