In stock
FN America .223 Rem/5.56 18" Rifle Barrel, Chrome Lined Black Phosphate - 36423
In stock

FN America .223 Rem/5.56 18" Rifle Barrel, Chrome Lined Black Phosphate - 36423

Regular Price $530.59 Special Price $378.99
SKU 791130
Model Number 36423
Brand FNH
UPC 845737005146
Caliber .223 Remington, 5.56x45mm
Customers must read Compliance Information before purchasing.
This product is fulfilled by a PSA Partner and shipping times may vary.

Product Details


  • Size: 223 Remington/5.56x45mm NATO
  • Barrel Length: 18"
  • Twist Rate: 1:7"
  • Thread Size: 1/2-28
  • Material: Chrome Molybdenum Vanadium Steel
  • Finish: Chrome Lined Black Phosphate
  • For Use With: AR-15 Style Rifle
  • Gas System Length: Rifle
  • Diameter at Gas Port: 3/4"


FN AR-15 Hammer-Forged Barrels have a chrome-lined chamber and bore to help resist corrosion and provide heat erosion resistance. Their barrel is forged from Chrome Moly Vanadium steel and built for the .750" diameter gas block with 1/2x28" threaded muzzle. It has an M4-style feed ramp and barrel extension for consistent and reliable feeding. This barrel is chambered in 5.56 NATO with a 1:7" twist with a manganese phosphate finish.


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All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.