we hi-capa 5.1 v2 gas/co2 blowback alu.slide full metal(Airsoft Gun) Package with Green Gas Magazine/Capacity: 28 rds/Velocity:300 fps If customer wants to buy Co2 magazine, please search "Co2 Magazine-GBB-401/402/403/404/405/406/407/414 " If customer feels interest in extra gas magazine, please search "Magazine-GBB-401/402/403/404/405/414 (Hi-Capa 5.1) " It is an airsoft product. This product is restricted from shipment into the state of New York and buyer must be over 18 years old Currently, item can be shipped only within the U.S., excluding certain cities and states.