The FN America 14.7-inch AR-15 Barrel (brand part no. 20-100038) is a button-rifled, government profile barrel chambered in 5.56 NATO/.223 Remington. FN builds this barrel with a mid-length gas system and a 1 in 7 inch right-hand twist rate that stabilizes a wide range of 5.56 bullet weights, along with M4 feed ramps for reliable feeding on flat-top AR-15 uppers. The barrel ships threaded and finished in black. Coming from FN America / FN Herstal, this 14.7-inch length is the same barrel length used on many current-issue military carbines, giving a shorter, lighter-handling rifle build.

Key Specifications

• Chambered in 5.56 NATO/.223 Remington.
• Barrel length measures 14.7 inches.
• Rifled with a 1 in 7 inch right-hand twist for a wide range of bullet weights.
• Uses a mid-length gas system.
• Machined with a government profile contour.
• Finished in black.
• Rifling is button rifled for consistent bore dimensions.
• Includes M4 feed ramps for reliable feeding on flat-top uppers.
• Barrel is threaded at the muzzle for a compensator or flash hider.
• Does not include iron sights.

Frequently Asked Questions

Does this barrel need an NFA stamp? Not by itself, since a bare barrel is not a regulated firearm. But building a rifle-configured AR-15 with this 14.7-inch barrel at its true length makes the complete rifle a Short-Barreled Rifle requiring NFA registration, unless a muzzle device is permanently pinned and welded to bring total length to 16 inches or more.

What gas system does this barrel use? It runs a mid-length gas system, a common pairing for barrels in the 14 to 16-inch range.

Does it come threaded? Yes, the muzzle is threaded so you can install a compensator, flash hider, or a pinned-and-welded muzzle device.

Buy the FN America 14.7-inch AR-15 Barrel – 1:7 Mid-Length Gas, Government Profile

Order this FN America 14.7-inch AR-15 barrel from FN America / FN Herstal through our AR barrels lineup, shipped fast from our Lubbock, Texas gun shop.