Avenge-X Complete Regulator Stainless steel body with brass stem Compatible with Air Venturi Avenge-X PCP Air Rifles Please note: While this regulator will physically fit the Air Venturi Avenger line of PCPs, in some instances it will not allow the safety cross pin to be reinstalled into the regulator block. Because of this, it is recommended that the Avenger specific regulator be used in those PCPs.