Black oxide alloy steel 15-round 9mm Luger Genuine Ruger Factory Magazine is compatible with the Security-9 pistol. It is also compatible with the PC Carbine with the SR9/S9 magazine well insert installed. It is not compatible with SR9 or SR9c pistols. Not recommended for use with the Security-9 Compact pistol without the use of the Security-9 Compact Magazine Adapter. This Genuine Ruger Factory Accessory is made in the USA.