Sig Sauer P365 9mm 12-Round Magazine Featuring a corrosion-resistant nitride-coated steel body, this magazine offers superior field performance, coupled with long-lasting durability. A factory-installed, extended polymer floor plate integrates seamlessly with your standard P365’s frame for a snag-free draw, while aggressive texturing, consistent with the stippling on your pistol’s frame, ensures a reliable, ergonomic grip for improved control. The high-tensile steel spring, combined with the heat-treated, anti-tilt polymer follower ensures smooth, reliable feeding, and factory-drilled and numbered witness holes allow for quick, visual round counts. What’s better, this extended capacity magazine includes an easy-to-install, secondary base plate for compatibility with P365X and P365XL pistols. Designed for superior versatility and deep concealment, this 12-Round magazine boasts a snag-free, flush fit in the P365X and P365XL, and is slightly extended in the standard P365. Extended 12-round steel magazine for the P365, P365X, and P365XL micro-compact pistols.The 12-Round magazine also ships with an additional baseplate that can be easily installed in order to fit the P365XL.The 12-Round magazine will be a flush fit in the sig sauer P365X, P365XL, and extended in the P365.