Made in the USA, this M1 Carbine magazine is constructed of heat-treated steel with a blued finish, steel stamped mag follower, and chrome silicone wire. NOTE: This item is compatible with all original G.I carbines and most post war reproductions. Specifications and Features: Caliber: 30 Carbine Capacity: 15 Finish: Blued Model: M1 Carbine Material: Steel Type: Detachable Model Fit: M-1 Carbine Capacity: 15