PROMAG 509 MAGAZINE - 9MM - 10 ROUND CAPACITY - 32 ROUND BODY - STEEL - BLACK
ProMag Industries
$45.69
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ProMag Industries
PROMAG 509 MAGAZINE - 9MM - 10 ROUND CAPACITY - 32 ROUND BODY - STEEL - BLACK
The ProMag FN 509 Magazine delivers reliable 9mm feeding in a California-compliant 10-round configuration, housed in a full-size 32-round-body steel shell built to last a lifetime.
- Heat-treated high carbon steel body with durable black oxide finish
- Precision injection-molded follower ensures smooth, consistent round feeding
- Chrome silicon wire spring provides consistent tension and reliable cycling
- California-compliant 10-round capacity in a standard 32-round magazine body
- Backed by ProMag's lifetime guarantee against manufacturer defects
- Made in the USA with mil-spec materials and proven manufacturing methods
Who This Is For
This magazine is ideal for FN 509 owners in California and other capacity-restricted states who want a durable, steel-bodied magazine that holds 10 rounds while maintaining the full ergonomic profile of the original. It's a great choice for range shooters, home defenders, and everyday carry enthusiasts who refuse to compromise on build quality even within legal capacity limits.
Specifications
| Brand | ProMag Industries |
|---|---|
| Compatible Firearm | FN 509 |
| Caliber | 9mm Luger |
| Capacity | 10 Rounds (CA Compliant) |
| Magazine Body | 32-Round Profile |
| Material | Heat-Treated High Carbon Steel |
| Finish | Black Oxide |
| Follower | Injection-Molded Polymer |
| Spring Material | Heat-Treated Chrome Silicon Wire |
| Country of Origin | USA |
| Warranty | Lifetime Guarantee |
Frequently Asked Questions
Is this magazine permanently blocked to 10 rounds for California compliance?
Yes. This ProMag FN 509 magazine is configured to hold a maximum of 10 rounds to comply with California's magazine capacity restrictions. It is sold as a fixed 10-round magazine and is legal for purchase and use in California and other states with similar capacity limits. It retains the physical size of the standard 32-round body for a natural fit and feel in your FN 509.
Will this magazine fit all variants of the FN 509?
This ProMag magazine is designed to be compatible with the standard FN 509 platform chambered in 9mm. It should function with most FN 509 variants including the full-size model. However, if you own a compact or tactical variant with a different grip frame, we recommend verifying fitment before purchase, as grip and baseplate geometry can vary between models.
How does ProMag's steel construction compare to factory FN magazines?
ProMag manufactures their magazines using heat-treated high carbon steel bodies combined with precision injection-molded followers and chrome silicon wire springs — construction methods that prioritize durability and long service life. While the OEM FN magazines are the gold standard for your firearm, ProMag offers a cost-effective American-made alternative backed by a lifetime manufacturer's defect guarantee, making them a solid choice for training, backup, or range use.
- Caliber:
- 9mm
- Capacity:
- 10/32 Round
- Color:
- Black
- Follower Color:
- Black
- Type:
- Pistol Magazine
- CA Compliant:
- Yes
- Platform:
- 509
- Material:
- Steel
