Product Description The ProMag FN 509 pistol magazine is a 20-round, 9mm magazine built for reliable feeding and durability. It features a heat-treated steel magazine body with a black oxide blued finish, an injection-molded follower, and a heat-treated chrome silicone wire spring. Designed to fit FN 509 pistols, this magazine is a dependable option for range use, training, and spare-mag carry. Product Highlights 20-round capacity magazine designed to fit the FN 509 in 9mm Heat-treated steel magazine body with black oxide blued finish for durability Injection-molded follower to promote consistent, reliable feeding Heat-treated chrome silicone wire spring for long-lasting performance Made in the USA Specs Brand: ProMag Type: Pistol magazine Compatibility/Fit: FN 509 Caliber: 9mm Capacity: 20 rounds Material: Heat-treated steel body Finish: Blued / Black oxide Color: Black Follower: Injection molded Spring: Heat-treated chrome silicone wire Country of Manufacture: USA Manufacturer Part Number: FNHA13 UPC: 708279015885 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&&';;s manufacturer.