Compatible with the Ruger® Security-9®, Security-9 Pro, and the Ruger PC Carbine, the 2 Pack Ruger Security-9 9mm 10-Round Magazine is a standard OEM factory replacement magazine, manufactured to the same specifications and tolerances as original equipment magazines, ensuring a reliable, sure fit for flawless operation. Constructed of black oxide-finished alloy steel with an impact-resistant polymer floor plate, this magazine offers lasting durability, while numbered witness holes make for quick round counts. Made in USA.