Designed to fit your M1 Carbine chambered in .30 Carbine, this magazine provides smooth and reliable feeding. Constructed of steel with an electroplated finish, using a high-tensile strength compression spring and a bolt hold-open follower provides for long and reliable life.Features :Compatibility: M1 / M2 CarbineCaliber: .30 CarbineBody Material: SteelSpring Material: Music WireFinish: Cation Electrodeposition Coating