This magazine is compatible with your FN 509 Midsize.
| Material | Stainless Steel |
| FireArm | No |
| Model | 509 |
| Finish | Black |
| Caliber | 9mm Luger |
| Type | Detachable |
| Model Fit | 509 Midsize |
| Capacity | 10 |
| Brand Fit | FN |