The FN America 503 9mm Extended Magazine delivers superior performance and reliability. Designed specifically for the FN 503, this magazine features a robust stainless steel body that withstands wear while ensuring a perfect fit. With an extended 8-round capacity, this magazine enhances your shooting experience by providing additional rounds for extended sessions. Crafted to FN's exacting specifications, it guarantees durability and functionality in various conditions. Stainless steel body Extended design for enhanced capacity 8-Round Capacity for extended use Upgrade your FN 503's capabilities with this premium magazine.