Promag Fn 509 9mm Blue Steel
- Type:
- Magazine
- Capacity-Rounds:
- 32
- Caliber-Gauge:
- 9mm Luger
The ProMag FN 509 9mm magazine is a reliable steel feed solution built for shooters who demand durability without compromise. If you run an FN 509 and need dependable backup mags or spares, this American-made magazine pairs traditional steel construction with modern polymer components to deliver consistent performance at the range or in the field.
ProMag engineers these magazines using heat-treated high carbon steel and precision injection-molded polymer, a hybrid approach that balances toughness with smooth feeding. The magazine body features a black oxide finish that resists corrosion, while the heat-treated chrome silicon spring and molded follower are designed to cycle reliably through thousands of rounds. Every magazine ships with ProMag's lifetime guarantee against manufacturer defects—a commitment to quality that reflects confidence in the product.
Whether you're stocking up for regular practice, building a competition loadout, or keeping spares in your range bag or vehicle, this FN 509 magazine is a straightforward choice. Made in the USA, it's engineered to work hard and last.
Key Features
- Heat-treated high carbon steel body with black oxide corrosion-resistant finish
- Precision injection-molded polymer follower for smooth, reliable feeding
- Heat-treated chrome silicon wire spring for consistent spring tension and longevity
- Manufactured in the USA
- Lifetime guarantee against manufacturer defects
Specifications
| Firearm Compatibility | FN 509 |
| Caliber | 9mm |
| Material | Heat-treated high carbon steel body; injection-molded polymer follower |
| Finish | Black oxide |
| Warranty | Lifetime against manufacturer defects |
| Manufacture | USA |
Frequently Asked Questions
Will this magazine work with my FN 509?
Yes. This ProMag magazine is designed specifically for FN 509 9mm pistols.
What material is the magazine body made from?
The magazine body is constructed from heat-treated high carbon steel with a black oxide finish for corrosion resistance. The follower is injection-molded polymer, and the spring is heat-treated chrome silicon wire.
Does ProMag offer a warranty on this magazine?
Yes. Every ProMag magazine is backed by a lifetime guarantee against manufacturer defects.
Is this magazine made in the USA?
Yes, this ProMag FN 509 magazine is manufactured in the United States.

