Abstract: A gas system for a firearm is presented. The gas system has an elongate static tube and an elongate dynamic tube in a telescoping relationship. The elongate static tube defines a first internal passageway and is attachable to a portion of the gas block of the firearm. The elongate dynamic tube is telescopingly engaged with the elongate static tube. The elongate dynamic tube defines a second internal passageway in communication with the first internal passageway.