Springfield Armory Echelon 9mm 20 Round Pistol Magazine Flat Dark Earth 20. The extended polymer basepad aids in tactical reloads while the blacked-out corrosion resistant coating ensures a lifetime of service. Specifications for Springfield Armory Echelon 9mm 20 Round Pistol Magazine: Manufacturer: Springfield Armory Gun Make: Springfield Armory Gun Model: Springfield Armory Echelon Caliber: 9mm Luger Magazine Capacity: 20 Round Features of Springfield Armory Echelon 9mm 20 Round Pistol Magazine: Fits Echelon Package Contents: Springfield Armory Echelon 9mm 20 Round Pistol Magazine What firearm models does the manufacturer say Springfield Armory Echelon 9mm 20 Round Pistol Magazine is compatible with? The manufacturer says that Springfield Armory Echelon 9mm 20 Round Pistol Magazine is compatible with Springfield Armory EchelonSpringfield Armory EC6020F: Echelon 9mm 20 Round Pistol Magazine Flat Dark Earth 20