FN America Rifle Barrel for AR-15 556 NATO – 20″ Length, Rifle Length Gas System (20-100043)

• Rifle barrel designed for AR platform firearms chambered in 5.56 NATO caliber
• Features 20 inch barrel length for maximum velocity and extended range applications
• 1 to 7 twist rate supports stabilization of a wide range of bullet weights
• Hammer forged construction enhances durability and long-term barrel performance
• Rifle length gas system supports reliable cycling and smoother recoil impulse
• Matte black finish reduces glare and provides corrosion resistant exterior surface

The FN America 20″ 556NATO 1:7 Twist Hammer Forged AR-15 Barrel Black is a rifle barrel designed for AR-15 platform builds and replacements. This rifle barrel features a 20 inch length with a 1:7 twist rate and is chambered in 5.56 NATO, providing a full-length configuration for compatible rifles.

The FN America rifle barrel uses a hammer-forged construction and includes a rifle-length gas system with an M16 contour profile. It is high pressure tested and magnetic particle inspected for quality assurance, and features a matte black finish for corrosion resistance. In normal operation, this 20 inch barrel is used for AR-15 rifles requiring a rifle-length gas system and 5.56 NATO chambering. The barrel is categorized under rifle barrels and is designed to fit AR platform rifles.