FN 20100380 509 Compact 15rd Base Pad w/Mag Sleeve 9mm Luger Black/Flat Dark Earth Steel
This magazine is compatible with your FN 509 Compact. It features a stainless steel body with a flat black finish, high visibility anti-tilt follower, extended floorplate, and mag sleeve. *Note- This mag will not work with FNS or FNX pistols.