FN 20100375 50912rd Extended Floorplate 9mm Luger FN 509 Compact Black Steel
$49.99
$57.00
(You save
$7.01
)
- Capacity-Rounds:
- 12
- Type:
- Magazines
- Firearm Group:
- Handgun
- Firearm Make Fit:
- FN Herstal
- Caliber-Gauge:
- 9mm Luger
- Finish-Color:
- Black
- Model:
- 509
- Material:
- Steel
- Model Fit:
- 509 Compact
The FN 509 Compact 9mm Luger extended floorplate magazine is a factory-spec replacement for shooters running FN's popular subcompact pistol. If you carry or train with a 509 Compact, having a spare mag—or several—on hand is essential. This one ships with an extended baseplate that adds capacity and gives you a more secure purchase during reloads, especially if you're wearing gloves or working under stress.
Built to the same tolerances and materials as the OEM magazines that came with your gun, this mag feeds 12 rounds of 9mm Luger reliably. The construction pairs an alloy steel body with polymer internals (follower and base plate), finished in matte black to match the pistol. FN manufactures these using the same process as factory-original equipment, so you get the fit and function your firearm was designed around—no guessing, no feed issues.
Whether you're stocking up for the range, setting up backup mags for duty or carry, or just building a reliable mag rotation, this extended-floorplate version gives you the capacity and ergonomics FN intended. It's straightforward: a quality factory replacement that works because it's built exactly like the magazine your 509 Compact shipped with.
Key Features
- 12-round capacity in 9mm Luger
- Extended floorplate for secure handling and faster reloads
- Factory FN specifications and tolerances
- Alloy steel body with polymer follower and base plate
- Matte black finish
- Designed for FN 509 Compact models
Specifications
| Firearm Compatibility | FN 509 Compact (9mm Luger) |
| Caliber | 9mm Luger |
| Capacity | 12 rounds |
| Material | Alloy steel body, polymer follower and base plate |
| Finish | Matte black |
| Base Plate Style | Extended floorplate |
| Model Number | FN 20100375 50912rd |
Frequently Asked Questions
Will this magazine work with my FN 509 Compact?
Yes. This magazine is designed specifically for FN 509 Compact models chambered in 9mm Luger and is manufactured to FN's original specifications and tolerances.
What's the difference between this mag and the standard one that came with my pistol?
The primary difference is the extended floorplate, which provides a longer grip surface for easier handling during reloads and better indexing with the hand. The capacity remains at 12 rounds.
Is this a factory replacement or aftermarket?
This is a factory FN product, manufactured using the same materials and process as the original equipment magazines that ship with the 509 Compact.
