while the other is a bit more special

Gearbox is equipped with quick spring change system - QSC

Comfortable polymer grip and enlarge trigger guard

28g Bbs (For Best Accuracy And Shooting Range)

5" metal quad raid system that you can use to attach accessories like a vertical grip

Madbull Airsoft GEMTECH BLACKSIDE 14mm Negative (CCW) Barrel Extension in Black AEG Piston while the other is aFeatures Aircraft grade aluminum construction 14mm Negative threading fits most Airsoft barrel profiles Manufacturer: Madbull Color: Black Specifications: Length: 155mm Material: T6 6061 Aluminum About Madbull MAD BULL Airsoft, established in 2004, is world famous for it's Airsoft accessories. Our major focus points are: Airsoft guns, Airsoft Toy Launchers, Airsoft Toy B. B. Showers, and Upgrade kits. We have a very strong R&D team and we put a lot of