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Fn 509 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: 100034382
Overview
Built for FN 509 owners who want a threaded-barrel setup for suppressors or compensators, this drop-in option is aimed at straightforward pistol upgrades without fitting. It features a 1/2-28 thread pattern, a 1:10" twist rate, and comes with a thread protector with captive O-ring. The barrel is heat treated and finished in black Melonite, offering a clean, purpose-driven setup for range use or a suppressed carry configuration.
Why Hunters Choose the Apex Tactical Specialties Inc
Threaded Fn
509 barrel supports suppressors and
Drop-in Design
Requires no fitting
Includes Thread
Protector with captive O-ring
1/2-28 Thread
Pattern
Uses 1:10
Twist rate
Key Features
- Threaded FN 509 barrel for adding compensators and suppressors
- Machined from premium cold hammer stainless steel barrel blanks
- Features a 1:10" twist rate
- Uses a 1/2-28 thread pattern
- Heat treated with a black Melonite finish
- Includes a thread protector with captive O-ring
- No fitting required
Best Used For
- FN 509 owners adding a suppressor-ready barrel without requiring fitting work
- Shooters planning to mount a compensator or suppressor using 1/2-28 threading
- Users wanting a direct drop-in upgrade for an FN 509 pistol
- Hunters or range shooters who prefer a threaded barrel with included thread protector
Specifications
| Blade Finish | black Melonite |
|---|---|
| Captive O Ring | Yes |
| Compensator Compatible | Yes |
| Heat Treated | Yes |
| Material | premium cold hammer stainless steel barrel blanks |
| No Fitting Required | Yes |
| Suppressor Ready | Yes |
| Thread Pattern | 1/2-28 |
| Thread Protector Included | Yes |
| Twist Rate | 1:10" |
Pros
- Threaded FN 509 barrel supports suppressors and compensators
- Drop-in design requires no fitting
- Includes a thread protector with captive O-ring
- Features a 1/2-28 thread pattern
- Uses a 1:10 twist rate
- Black Melonite finish is included
Considerations & Trade-offs
- Threaded-barrel setup adds length at the muzzle, so holster fit and carry setup may need to be checked before use.
- The 1/2-28 thread pattern is specific to compatible muzzle devices, so existing accessories should be verified for fit.
- This is a direct drop-in barrel, but any threaded-barrel installation should still be confirmed for proper function in the intended pistol setup.
- A thread protector is included, but it is an extra component to manage whenever the barrel is in use without a muzzle device.
Suggested Comparisons
- Threaded pistol barrels
- Suppressor-ready handgun upgrades
- Pistol compensators
- FN 509 accessories
Suggested Accessories
- Thread protector
- Suppressor
- Pistol cleaning kit
- Thread pitch gauge
Frequently Asked Questions
What pistol is this barrel made for?
This is a threaded barrel for the FN 509.
Is any fitting required for installation?
No fitting is required according to the product description.
What thread pattern does this barrel use?
It uses a 1/2-28 thread pattern.
Does it include a thread protector?
Yes. A thread protector with a captive O-ring is included with each barrel.
What finish and twist rate are listed for this barrel?
The barrel is described as heat treated with a black Melonite finish and a 1:10" twist rate.