XW airsoft based on in HK and China, production in China, quality control in HK, you could spend less money to buy good artical, which is specialize in airsoft products as following: 1. Gearbox internal parts like gearset, motor, piston, tune-up spring, cylinder, hop-up chamber and spring guide ect. 2. External Parts like Rail mount, metal bipod ect. 3. Optical like scope, laser sight, flashlight and night visionect. 4, Tactical equipments like apparel, pack, mask, sling and goggle ect. Besides, OEM service can be also provided. Depends on various demands from different customers, XW airsoft could supply any kinds of service to meet you, please feel free to contact us at any time.