Home / Accessory-Magazines / Beretta MAGAZINE PX4 40S&W 17RD EXTEND View cart “FN MAGAZINE FN 509M 9MM 10RD” has been added to your cart. Sale! Beretta MAGAZINE PX4 40S&W 17RD EXTEND$5200 $4705 Out of stock SKU: JM4PX4017 Category: Accessory-Magazines Product ID: 33568 Description Description 17rd. Mag for PX4 Storm 40S&WExtended PX4 Mag Related products Sale! Ruger MAGAZINE AMER COMPACT 9MM 10RD $4295 $4191 SIG SAUER MAG SP2022 357SIG/40S&W 12RD $4999 Springfield Armory MAGAZINE XD-S 40SW 6RD $3099 Springfield Armory MAGAZINE XDE 9MM 8RD FLUSH FIT $3699