FN 509 Midsize 9mm Luger 24-Round Mag Sleeve - Black Polymer

The FN 509 Midsize Mag Sleeve is a factory black polymer grip sleeve designed to slip over the base of your FN 509 Midsize 9mm Luger 24-round magazine. It extends the grip footprint to fill the hand more completely, giving a more secure, full-size hold on the pistol when running the higher-capacity midsize stick.

Engineered specifically for the FN 509 Midsize platform, this sleeve is a precision fit for the factory 24-round 9mm Luger magazine. The durable polymer construction matches the magazine body in both black finish and texture, blending in seamlessly while adding improved control during reloads and extended-range shooting.

Installation is simple - the sleeve slides over the base of the 509 Midsize 24-round magazine and seats firmly in place. It is designed as a grip-enhancing accessory, not as a magazine itself; the sleeve works with your existing FN 509 Midsize 24-round 9mm Luger magazine to deliver a more confident hold and better recoil management without changing capacity or function.