Description
The FN 509 LS Edge 9mm 5″ Optics-Ready Black/Gray is a full-size pistol built for shooters who need speed and consistent shot-to-shot performance. It pairs a long slide with a factory optics cut, flat-face trigger, and enhanced ergonomics. This model ships with MRD mounting plates and an FN ballistic case.
| Manufacturer | FN America |
|---|---|
| Model | FN 509 LS Edge |
| Material | Stainless steel slide, polymer frame (per manufacturer specs) |
| Compatibility | FN 509 series holsters and magazines |
| Finish | Black/Gray |
| Weight | Approximately 28.5 oz (unloaded, per manufacturer specs) |
| Condition | New |
Key Features
- Optics-Ready Slide: Factory-cut for MRD mounting plates – lets you mount your favorite red dot without sending the slide out for machining.
- Flat-Face Trigger: Crisp break and short reset – helps you stay on target for faster follow-up shots.
- Interchangeable Backstraps: Three sizes included – fits a broad range of hand sizes for a natural point of aim.
- Long Slide Design: Extended 5″ barrel and slide – gives you a longer sight radius for precision shooting and recoil management.
- FN Ballistic Case: Durable case with foam insert – protects the pistol and accessories during transport and storage.
Who It’s For
This pistol is for competitive shooters, professional users, and anyone who wants a reliable, optics-ready 9mm for range work or home defense. It’s also a good fit for new gun owners who want a full-size pistol that can grow with them as they add optics.
Pros & Cons
- Pro: Optics-ready without aftermarket work – saves you time and money.
- Pro: Flat-face trigger helps with accuracy and consistency.
- Pro: Interchangeable backstraps make it easy to fit different hand sizes.
- Con: The long slide can be less concealable for everyday carry – better suited for open carry, competition, or range use.
Comparison: FN 509 LS Edge vs. Zev Technologies OZ9 vs. Agency Arms AOS
| Feature | FN 509 LS Edge | Zev Technologies OZ9 | Agency Arms AOS |
|---|---|---|---|
| Price | $1,090.16 | ~$1,800 | ~$2,200 |
| Slide Material | Stainless steel | Stainless steel | Stainless steel |
| Optics Ready | Yes (MRD plates included) | Yes (RMR cut) | Yes (AOS system) |
| Trigger | Flat-face | Flat-face | Flat-face |
| Barrel Length | 5″ | 5.22″ | 5″ |
| Backstraps | 3 sizes | 3 sizes | 2 sizes |
FAQ
Is the FN 509 LS Edge optics-ready?
Yes. The slide is factory-cut for MRD mounting plates, and the pistol includes those plates in the box. You can mount most popular red dots without extra machining.
What is the magazine capacity?
The standard magazine holds 17 rounds of 9mm. Some states may have capacity restrictions, so check local laws.
Is this pistol good for concealed carry?
The long slide and full-size frame make it less ideal for concealed carry. It’s better suited for competition, home defense, or open carry.
Does it come with a case?
Yes. It ships in an FN ballistic case with foam insert for protected transport and storage.
✅ Nationwide delivery (all 50 states)
✅ Ships 1-2 business days
✅ 30-day returns
✅ Secure checkout
Browse more options in our Semi Auto Handguns or check out FN Handguns for other models.
Last updated: April 2026
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