FN AR-15 18in Cold Hammer Forged Chrome-Lined Barrel, Rifle-Length Gas System, 36423

SKU: FLX-154343

Vendor FN
Regular price $337.98
Sale price $337.98 Regular price $349.00
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Product Description

The FN AR-15 barrel (MPN 36423) is a cold hammer forged, chrome-lined 18 inch barrel built from FN's proprietary Chrome Moly Vanadium steel for durability and consistent performance. Each barrel is magnetic particle tested for quality assurance, with a chrome-lined chamber and bore designed to resist corrosion and heat erosion for extended barrel life. M4-style feed ramps and the barrel extension promote reliable feeding, while a matte black manganese phosphate finish helps protect against external corrosion and oxidation. Designed for a rifle-length gas system and chambered in 5.56x45mm NATO, this barrel is a strong choice for AR-15 builds prioritizing longevity and reliability.

Product Highlights

  • Cold hammer forged (CHF) Chrome Moly Vanadium (CMV) steel construction for long-lasting durability
  • Chrome-lined bore and chamber to improve corrosion resistance and reduce heat erosion
  • Magnetic particle tested for added quality control and consistency
  • M4-style feed ramps and barrel extension for dependable feeding
  • Matte black manganese phosphate finish to resist external corrosion and oxidation

Specs

  • Brand: FN
  • Manufacturer Part Number: 36423
  • UPC: 845737005146
  • Platform: AR-15
  • Caliber: 5.56x45mm NATO
  • Barrel Length: 18 in
  • Gas System Length: Rifle length
  • Material: Chrome Moly Vanadium (CMV) steel, cold hammer forged
  • Bore/Chamber: Chrome lined
  • Finish: Manganese phosphate (black phosphate)
  • Feed Ramps: M4 style
  • Twist Rate: 1:7 RH
  • Muzzle Threads: 1/2 x 28
  • Gas Block Diameter: 0.750 in

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