PROMAG FN 509 MAGAZINE - 9MM - 10 ROUND CAPACITY - 50 ROUND BODY - POLYMER - BLACK
ProMag Industries
$100.69 - $110.69
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ProMag Industries
PROMAG FN 509 MAGAZINE - 9MM - 10 ROUND CAPACITY - 50 ROUND BODY - POLYMER - BLACK
The ProMag FN 509 10/50 Drum Magazine delivers the high-capacity look and feel of a 50-round drum body while remaining fully compliant with California's 10-round magazine limit — giving FN 509 owners a bold, reliable feeding solution built right here in the USA.
- California-compliant 10-round capacity housed in a 50-round drum body
- Fits the FN 509 series chambered in 9mm Luger
- Heat-treated steel drum body finished in durable black oxide coating
- Precision-wound chrome silicon magazine spring resists fatigue over time
- Injection-molded polymer follower ensures smooth, consistent round feeding
- Made in the USA and backed by ProMag's lifetime manufacturer defect guarantee
Who This Is For
This magazine is ideal for FN 509 owners in California and other restricted states who want the aggressive aesthetic of a drum magazine without sacrificing legal compliance. It's a great choice for range shooters, competitive shooters, and collectors who appreciate American-made quality and the distinctive look of the 50-round drum profile on their pistol.
Specifications
| Brand | ProMag Industries |
|---|---|
| Compatible Firearm | FN 509 (9mm) |
| Caliber | 9mm Luger |
| Capacity | 10 Rounds (California Compliant) |
| Body Style | 50-Round Drum Profile |
| Body Material | Heat-Treated Steel |
| Finish | Black Oxide |
| Follower Material | Injection-Molded Polymer |
| Spring Material | Heat-Treated Chrome Silicon Wire |
| Color | Black |
| Country of Origin | USA |
| Warranty | Lifetime (Manufacturer Defects) |
Frequently Asked Questions
Is this magazine truly limited to 10 rounds, or can it be modified to hold more?
This magazine is manufactured and blocked at the factory to hold a maximum of 10 rounds, making it legal for sale and use in California and other states with magazine capacity restrictions. It is not designed or intended to be converted to a higher capacity, and attempting to modify it would be illegal in restricted states and would void the ProMag lifetime warranty.
Which FN 509 models is this magazine compatible with?
This ProMag drum magazine is designed specifically for the FN 509 pistol platform chambered in 9mm Luger. This includes standard FN 509 variants. If you own a different FN model or caliber, verify compatibility before purchasing, as magazine fitment can vary between firearm families.
How reliable is the ProMag drum magazine for range use, and how should I maintain it?
ProMag magazines are assembled with precision-wound chrome silicon springs and inspected at every stage of production for consistent feeding reliability. For best performance, avoid leaving the magazine fully loaded for extended periods, as this can stress the spring over time. Periodically disassemble, clean, and lightly lubricate the internals to keep feeding smooth and reliable during range sessions.
- Caliber:
- 9mm
- Capacity:
- 10/50 Round
- Color:
- Black
- Follower Color:
- Black
- Type:
- Pistol Magazine
- CA Compliant:
- Yes
- Platform:
- 509
- Material:
- Polymer
