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Airsoft green gas is a specially formulated propellant used to power many gas blowback (GBB) airsoft guns, typically supplied in pressurized cans. Composed mainly of propane mixed with silicone oil for lubrication, green gas is easy to use—simply filling directly into the magazine’s gas reservoir—and provides consistent power and cycling action for airsoft pistols and rifles. The added silicone oil helps maintain and protect internal seals and moving parts, ensuring reliable performance and longevity of the gun. Green gas is popular among players for its convenience, safety, and suitability for a wide range of airsoft gas-powered models.