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Apex 9mm Threaded Barrel for FN 509 4" Drop In Barrel in Black

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Your Price: $208.95
Retail Price:$219.95
You Save:$11.00(5%)
Apex Tactical Specialties FN 509 Threaded Barrel for 4" Finished in Black. This drop in threaded barrel is designed specifically for the FN 509 model pistols with a factory 4.00" barrel, including the FN 509 Midsize. This upgraded barrel is made from Stainless Steel and heat treated for long lasting durability, it is then finished in a Black Melonite and contrasting Stainless Steel fluting. Increase your FN 509 accuracy due to this barrels 1:10 twist rate and do it easily with its' true drop in ability, no fitting required. This FN 509 drop in barrel has a 1/2 x 28 threaded muzzle and comes included with a thread protector and a light recoil spring assembly for use when shooting this barrel with a compensator.
Part Number: ATDBRL-BLK
Availability: Out of Stock.
Apex Tactical Specialties FN 509 Threaded Barrel for 4" Finished in Black.  This drop in threaded barrel is designed specifically for the FN 509 model pistols with a factory 4.00" barrel, including the FN 509 Midsize.  This upgraded barrel is made from Stainless Steel and heat treated for long lasting durability, it is then finished in a Black Melonite and contrasting Stainless Steel fluting.  Increase your FN 509 accuracy due to this barrels 1:10 twist rate and do it easily with its' true drop in ability, no fitting required.  This FN 509 drop in barrel has a 1/2 x 28 threaded muzzle and comes included with a thread protector and a light recoil spring assembly for use when shooting this barrel with a compensator.

Apex Tactical Specialties FN 509 Threaded Barrel for 4" Finished in Black Features:


  • Made from Stainless Steel
  • Heat treated to specs
  • Finished in Black Melonite
  • Fluted barrel
  • Stainless Steel flutes
  • Long lasting durability
  • Improves accuracy
  • 1 in 10 twist rate
  • 1/2 x 28 threaded muzzle
  • Thread protector with O-ring included
  • True drop in barrel
  • Requires zero fitting
  • Direct replacement for factory barrel
  • Kit comes with the following parts:
    • Apex Drop In FN 509 Threaded Barrel
    • Light Recoil Spring Assembly
    • Thread Protector w/ O-Ring, Apex Installed
  • Compatible with the following calibers:
    • 9mm Luger
  • Compatible with the following handguns:
    • FN 509 with 4" non-threaded barrel
    • FN 509 Midsize

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