FN 20-100377 509C MAG 9MM EXT FP 10R BLK

FN 20100377 509 Compact 10rd Extended Floorplate 9mm Luger Black Steel
This magazine is compatible with your FN 509 Compact. It features a stainless steel body with flat black finish, high visibility anti-tilt follower, and extended floorplate. *Note- This mag will not work with FNS or FNX pistols.