FN 20-100047 AR-15 5.56x45mm 16″ M4 CHF Chrome-Lined Barrel

This FN AR-15 barrel is a factory cold hammer forged component designed for 5.56x45mm NATO. It measures 16 inches with an M4 profile and utilizes a carbine length gas system. The bore and chamber are chrome lined, and the exterior is finished in manganese phosphate for corrosion resistance. Construction uses high-grade Chrome Moly Vanadium steel and barrels are Magnetic Particle tested at the factory.

Key Specifications

• The model is AR-15.
• The barrel is chambered in 5.56x45mm NATO.
• The barrel length is 16″.
• The profile is M4 Profile.
• The gas system is Carbine Length.
• The barrel is Cold Hammer Forged from Chrome Moly Vanadium steel.
• The bore and chamber are chrome lined for corrosion and erosion resistance.
• The external finish is Manganese Phosphate (matte black).
• The barrel is Magnetic Particle tested to verify integrity.
• The barrel includes M4-style feed ramps and extension for consistent feeding.

Built for durability and consistent performance, this FN cold hammer forged, chrome-lined barrel offers a corrosion-resistant bore and a proven M4 profile for reliable feeding. Its factory testing and robust materials make it a practical choice for shooters seeking a high-quality replacement or upgrade barrel for a 5.56 NATO AR-15 platform.