FN 5.56 Button Cut Carbine Barrel – 14.7″


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The FN America 14.7″ 5.56 Button Cut Carbine Gas AR-15 M4 Barrel is a premium barrel that lives up to the battle tested reputation of FN America. The barrel is designed to be extremely durable and reliable with a high-strength 41V50 chrome moly vanadium construction and a black manganese phosphate finish. This barrel is chambered in 5.56 NATO/.223 Remington with a 1:7 twist rate and 1/2”x28 threaded barrel for optimal performance and functionality. It boasts a chrome lined chamber and bore to extend the barrel’s service life and ensure reliable chambering and extraction. The 5.56 M4 Barrel features a M4 feed ramp to promote consistent and reliable feeding.

FN barrels are High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) to ensure that it is free of micro-stresses, cracks and flaws to ensure the quality and consistency of each barrel. In addition, to the rigorous standards and specifications for each barrel, FN has years of battle proven experience. They produce some of the longest-lived, most accurate rifle barrels for the United States military with exceptional repeatability and incredible durability. The FN America 14.7″ 5.56 Button Cut Carbine Gas AR-15 M4 Barrel is no exception and a great option for any AR build.


  • Manufactured by FN America
  • 14.7-inch steel barrel
  • Chrome lined chamber and bore
  • Manganese phosphate barrel finish
  • Carbine length gas system
  • M4 profile
  • 1/2″ x 28 threaded muzzle
  • M4-style feed ramp
  • 1:7 RH twist rate
  • 5.56 NATO

Additional information

Weight 33 oz
Dimensions 15 × 2 × 2 in
Thread Pitch



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