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Fn 509 Compact Direct Drop-In Threaded Barrel
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$213.75
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SKU: 100040772
Overview
This direct-drop-in replacement is built for the FN 509 Compact and is intended for shooters who want a threaded barrel option without requiring fitting. It features a 1/2-28 thread pattern for standard muzzle attachments and an undercut thread intercept designed to accommodate a wide variety of attachments. The black Melonite finish adds a durable, low-profile look, while the cold hammer forged stainless steel blank construction reflects its premium build. For hunters and outdoor users who value a straightforward upgrade path, it offers a practical way to configure the pistol for threaded accessories.
Why Hunters Choose the Apex Tactical Specialties Inc
Direct Drop-in
Replacement for the factory barrel;
Threaded 1/2-28
To accommodate standard muzzle attachments
Under-cut Thread
Intercept supports a wide variety
Black Melonite
Finish adds a durable protective
Made From
Premium cold hammer forged stainless
Key Features
- Direct drop-in replacement for the factory barrel; no fitting required.
- Threaded 1/2-28 to accommodate standard muzzle attachments.
- 1:10" twist rate.
- Under-cut thread intercept supports a wide variety of attachments.
- Black Melonite finish for longevity and durability.
- Made from premium quality cold hammer forged stainless steel blanks.
Best Used For
- FN 509 Compact owners seeking a direct drop-in threaded barrel replacement without fitting work
- Shooters needing 1/2-28 threading for standard muzzle attachments
- Users wanting a factory-barrel replacement for compatible FN 509 Compact setups
- Hunters and range users who prefer a black Melonite-finished barrel option
- Owners looking for a threaded barrel with undercut thread intercept for attachment compatibility
Specifications
| Applicable To | FN 509 Compact |
|---|---|
| Blade Finish | Black Melonite |
| Fitment | Direct drop-in replacement of factory barrel |
| Fitting Required | No |
| Material | Cold Hammer forged stainless steel blanks |
| Thread Pitch | 1/2-28 |
| Threaded | Yes |
| Twist Rate | 1:10" |
| Undercut Thread Intercept | Yes |
Pros
- Direct drop-in replacement for the factory barrel; no fitting required.
- Threaded 1/2-28 to accommodate standard muzzle attachments.
- Under-cut thread intercept supports a wide variety of attachments.
- Black Melonite finish adds a durable protective surface.
- Made from premium cold hammer forged stainless steel blanks.
- 1:10" twist rate is clearly specified in the product data.
Considerations & Trade-offs
- Threaded 1/2-28 muzzle compatibility means it is intended for standard muzzle attachments, so fit should be confirmed against your specific setup before ordering.
- The product is described as a direct drop-in replacement for the factory barrel, but it is still limited to the listed compatible firearm platform.
- The black Melonite finish is presented as a durability-focused finish, but the listing does not provide performance specifics beyond that finish description.
- The undercut thread intercept is designed to accommodate a wide variety of attachments, yet actual accessory fit will depend on the attachment used.
Suggested Comparisons
- Pistol barrels
- Threaded handgun barrels
- FN 509 Compact accessories
- Muzzle device-compatible handgun parts
Suggested Accessories
- Threaded muzzle device
- Barrel thread protector
- Pistol cleaning kit
- Pistol case
Frequently Asked Questions
What firearm is this barrel made to fit?
The product data says it is an FN 509 Compact direct drop-in threaded barrel. It also notes "Applicable to What Guns: Mfg: Apex Tactical Specialties Inc," but does not provide any additional fitment details.
Does this barrel require fitting or gunsmithing?
No. The description states it is a direct drop-in replacement for the factory barrel and says no fitting is required.
What thread pattern does it use for muzzle attachments?
It is threaded 1/2-28 to accommodate standard muzzle attachments.
What finish does the barrel have?
The barrel has a Black Melonite finish.
What twist rate is listed for this barrel?
The listed twist rate is 1:10".