Home / Accessory-Magazines / FN MAGAZINE FN 503 9MM 6RD FDE View cart “SIG SAUER MAG 320/250 FULL 9MM 10RD” has been added to your cart. FN MAGAZINE FN 503 9MM 6RD FDE$4999 Only 2 left in stock FN MAGAZINE FN 503 9MM 6RD FDE quantity Add to cart SKU: 20-100507 Category: Accessory-Magazines Product ID: 26000 Description Description FDE Baseplate Related products Springfield Armory MAGAZINE XD 40SW 12RD SERV/TAC $3099 FN MAGAZINE FN 509 9MM 10RD FDE $5699 Sale! Warne GLOCK 17/22 MAG EXT +5/+4 FDE $5449 Original price was: $5449.$5201Current price is: $5201. Sale! Ruger MAGAZINE SR40/SR40C 15RD $4895 Original price was: $4895.$4610Current price is: $4610.