This black oxide alloy steel 10-round 9mm Luger Genuine Ruger Factory Magazine is compatible with the Security-9 pistol and the PC Carbine with the SR9/Security-9 Magazine Well Insert installed. This magazine comes with a flush-fit floor plate installed. It is not compatible with SR9 or SR9c pistols. Not recommended for use with the Security-9 Compact pistol. This Genuine Ruger Factory Accessory is made in the USA.