FN America 509 9mm 10 Rd Polymer Black Finish. These Magazines & Parts by FN America use a non-threaded spring and follow standard magazine feeding guidelines. Both the bolt and magazine are marked "Ready" after being removed from a loaded firearm....
FN America 509 9mm 10 Rd Polymer Black Finish. These Magazines & Parts by FN America use a non-threaded spring and follow standard magazine feeding guidelines. Both the bolt and magazine are marked "Ready" after being removed from a loaded firearm....