Can only be shipped by Ground
UHC Power Green Gas with a removable fill adaptor. The longer fill stem can be useful when filling some magazines with recessed fill ports.
Gas contained and the canisters meet US transportation regulations and are certified by U.S. Department of Transportation. The canister itself is equipped a safety valve, whenever the inner pressure in the canister exceeds a certain safety level, the valve will release the gas automatically to avoid explosion risks.