Availability: In Stock
The FN 509 Compact 9mm Luger extended floorplate magazine gives you extra round capacity and a fighting grip on a single-stack duty pistol. If you carry or train with an FN 509 Compact, this 10-round magazine is a sensible addition to your loadout—it holds one more round than the flush-fit base, and the extended floorplate extends the grip to give your pinky finger a home instead of dangling in air. Available in black or Flat Dark Earth (FDE) steel, it matches your pistol's finish.
FN engineered the 509 Compact for concealment and fast handling, and their factory magazines are built to match that reliability standard. A 10-round capacity keeps you compliant where higher-cap mags are restricted, while still adding firepower and grip surface. Whether you're setting up a backup magazine, building redundancy, or want the handling advantage of the extended floorplate during range sessions, this is purpose-built hardware, not an afterthought.
Pair this with other FN 509 Compact magazines in different capacities to suit your carry, duty, or training needs. FN offers 12, 15, and 24-round options in the same lineup, so you can tailor your battery to your role and the law where you shoot.
| Caliber | 9mm Luger |
| Capacity | 10 rounds |
| Finish | Black / Flat Dark Earth (FDE) Steel |
| Compatibility | FN 509 Compact |
| Model Number | FN 20100378 |
| Manufacturer | FN America |
Yes—this is an OEM FN 509 Compact magazine. It is engineered and tested for the FN 509 Compact platform.
FN offers 10, 12, 15, and 24-round magazines for the 509 Compact. The 10-round with extended floorplate gives you one extra round and improved grip compared to flush-fit options, while staying compliant in restricted jurisdictions. Higher capacities are available if your local law allows.
Yes. This magazine is available in both black and Flat Dark Earth (FDE) steel, so you can match your pistol's finish.
This is a single 10-round magazine. FN also offers magazine kits that bundle multiple capacities if you want to build a complete loadout.
SKU: 115669496 • Width: 2.6in • Height: 1.2in • Depth: 6.4in • Weight: 0.2oz
Availability: In Stock
The FN 509 Compact 9mm Luger extended floorplate magazine gives you extra round capacity and a fighting grip on a single-stack duty pistol. If you carry or train with an FN 509 Compact, this 10-round magazine is a sensible addition to your loadout—it holds one more round than the flush-fit base, and the extended floorplate extends the grip to give your pinky finger a home instead of dangling in air. Available in black or Flat Dark Earth (FDE) steel, it matches your pistol's finish.
FN engineered the 509 Compact for concealment and fast handling, and their factory magazines are built to match that reliability standard. A 10-round capacity keeps you compliant where higher-cap mags are restricted, while still adding firepower and grip surface. Whether you're setting up a backup magazine, building redundancy, or want the handling advantage of the extended floorplate during range sessions, this is purpose-built hardware, not an afterthought.
Pair this with other FN 509 Compact magazines in different capacities to suit your carry, duty, or training needs. FN offers 12, 15, and 24-round options in the same lineup, so you can tailor your battery to your role and the law where you shoot.
| Caliber | 9mm Luger |
| Capacity | 10 rounds |
| Finish | Black / Flat Dark Earth (FDE) Steel |
| Compatibility | FN 509 Compact |
| Model Number | FN 20100378 |
| Manufacturer | FN America |
Yes—this is an OEM FN 509 Compact magazine. It is engineered and tested for the FN 509 Compact platform.
FN offers 10, 12, 15, and 24-round magazines for the 509 Compact. The 10-round with extended floorplate gives you one extra round and improved grip compared to flush-fit options, while staying compliant in restricted jurisdictions. Higher capacities are available if your local law allows.
Yes. This magazine is available in both black and Flat Dark Earth (FDE) steel, so you can match your pistol's finish.
This is a single 10-round magazine. FN also offers magazine kits that bundle multiple capacities if you want to build a complete loadout.
SKU: 115669496 • Width: 2.6in • Height: 1.2in • Depth: 6.4in • Weight: 0.2oz