This is a direct-fit, drop-in 9mm threaded barrel for the FN 509 platform. It replaces the factory barrel to accept a suppressor or compensator without any gunsmith fitting. The barrel uses a 1:10” twist rate and a 1/2-28 thread pattern, making it compatible with standard 9mm suppressor mounts and muzzle devices. Each barrel includes a thread protector with captive O-ring.
Compatibility
- FN 509 (full-size, compact, and midsize models)
- FN 509 Tactical (direct replacement for factory threaded barrel)
- FN 509 LS Edge
- FN 509 MRD
- Not compatible with: FN FNS, FNX, or 502 models
Key Features
- Drop-in installation – no fitting required
- 1:10” twist rate, 1/2-28 thread pattern
- Heat-treated steel with black finish
- Includes thread protector with captive O-ring
- Direct OEM replacement – uses factory recoil spring and guide rod
Install Difficulty: 1/5
Tools needed: None. Field strip the slide, remove the factory barrel, drop in this barrel, reassemble. Function-check before live fire.
FAQ
Will this fit my FN 509 Compact?
Yes. This barrel is designed for the 509 platform including compact, full-size, and midsize frames. It uses the same locking lug geometry and hood dimensions as the factory barrel.
Do I need to replace the recoil spring?
No. This barrel uses the factory recoil spring and guide rod. It is a direct drop-in replacement.
Is this barrel compatible with suppressor-height sights?
Yes. The barrel is threaded for suppressor use. Standard factory sights will clear most 9mm suppressors, but suppressor-height sights are recommended for a co-witness through an optic.
Shipping: Ships within 1 business day. Warranty: This component is covered by the manufacturer’s warranty against defects in materials and workmanship. Restrictions: Not available for shipment to CA, CT, DE, Washington DC, HI, IL, NY, or WA.
Reviews
There are no reviews yet.