This replacement or spare magazine is compatible with the Beretta 92FS & Cx4 Storm. It is constructed of carbon steel with a gloss blued finish, counter hole indicators, plastic mag plate and sleeve. This mag is also compatible with these other Beretta models: 92SB, 92F 92A1, M9, M9A1, 90-Two, Billennium, Vertec, Brigadier, Centurion, Elite, CX4 with 90 series Magazine Well Insert/Magazine Release, 92D, 92G, 92G-SD, 92 Combat, 92 Combat Combo, 92 Stock, 92 Steel I, 92 Vertec (ALL), 92SB, 93R. Will fit in 92FS Compact type L, 92 FS Compact Inox, 92SB Compact, 92 Compact Cary Type L. NOTE: If you are purchasing this magazine for a CX4 Carbine, please ENSURE that your pistol has a compatible adapter.