Home / Accessory-Magazines / FN MAG SLEEVE FN 509M 9MM 17RD View cart “FN MAGAZINE FN 503 9MM 6RD FDE” has been added to your cart. FN MAG SLEEVE FN 509M 9MM 17RD$1599 Only 2 left in stock FN MAG SLEEVE FN 509M 9MM 17RD quantity Add to cart SKU: 20-100355 Category: Accessory-Magazines Product ID: 56934 Description Description Sleeve For 17 rd. Magazine Related products Sale! Ruger MAGAZINE SR40/SR40C 15RD $4895 Original price was: $4895.$4610Current price is: $4610. FN MAGAZINE FN 509M 9MM 10RD $5699 Walther Arms MAGAZINE PPK/S 22LR 10RD $3900 Springfield Armory MAGAZINE XDE 9MM 8RD FLUSH FIT $3699