FN 20-100044 AR-15 5.56 NATO 14.7" M4 Carbine Barrel

FN Premium AR-15 Barrel

FN's AR-15 barrels represent the pinnacle of American manufacturing excellence. Built from U.S.-sourced Chrome Moly Vanadium steel per Mil-B-11595E specifications, each barrel undergoes rigorous quality control to ensure reliability and consistency.

Quality Assurance

• High Pressure Testing (HPT): Every barrel is tested to verify structural integrity
• Magnetic Particle Inspection (MPI): Detects microstresses and internal flaws before they become problems
• Button Rifling: Provides superior bore consistency and accuracy

Durability & Performance

The chrome-lined bore and chamber resist corrosion and heat erosion, significantly extending barrel life. This proven design keeps your rifle running reliably through thousands of rounds.

M4 Profile Features:

• Carbine-length gas system for balanced handling
• M4-style feed ramps ensure consistent ammunition feeding
• Integrated barrel extension for reliable chambering and extraction

Finish

The matte black Manganese Phosphate finish provides excellent external corrosion and oxidation resistance, maintaining appearance and function in demanding conditions.

At 14.7 inches, this barrel delivers the balance of velocity and maneuverability that makes the AR-15 platform so versatile for tactical, competitive, and recreational shooting.