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This FN manufactured 5.56x45mm AR-15 barrel is produced to the same specifications as US military issue barrels.

Starting from 4150 steel alloy, the barrel is button broached with a 1-7 right-hand twist per military specifications. This process ensures a consistent and uniform bore. The bore is then chrome lined and exterior finished with a mil-spec, black phosphate.

  • Chambered in 5.56x45mm NATO
  • Includes barrel extension with M4 feed ramps
  • Length: 16”
  • OD at the gas journal is .750
  • Barrel weighs 1lb 8oz

Muzzle features 1/2-28 threads for attachment of a standard A2 flash hider, or the muzzle device of your choice. This particular barrel features a lightweight profile and a mid-length gas system.


Big Book Catalog, Issue:70, Page:019

FN - AR-15 LIGHTWEIGHT 5.56 16" BARREL

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In Stock

Cartridge: 5.56 mm NATO

Contour: Lightweight

Finish: Black

Length: 16

Gas System Length: Mid-Length

Muzzle Threads: 1/2-28, ...

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