FN 20100510 509 17rd 9mm Black Stainless Steel/Polymer

The FN 509C 9mm 17-Round Magazine is a factory OEM magazine, constructed of heat-treated stainless steel with a black finish for superior durability and corrosion resistance in any environment. The steel wire internal spring and anti-tilt polymer follower ensure flawless feeding, while numbered witness holes allow for quick, visual round counts in the field.