Airsoft pistol magazine Fits ASG Steyr M9-A1 CO2 airsoft pistols (item# ASG-50056) 15 rds • Own an ASG Steyr M9-A1 CO2 airsoft pistol? Pick up a couple spare magazines to avoid constantly reloading your gun. This magazine fits ASG Steyr M9-A1 CO2 airsoft pistols exclusively. Black, 15 rds.