FN 20-100046 AR-15 5.56 NATO 16" M4 Carbine Barrel

FN AR-15 Premium Barrel

FN manufactures this AR-15 barrel to exacting military specifications, using U.S.-sourced Chrome Moly Vanadium steel per Mil-B-11595E standards. Every barrel undergoes rigorous quality control to ensure reliability and consistency.

Quality Assurance

• High Pressure Testing (HPT): Each barrel is tested to verify safe performance under maximum chamber pressures
• Magnetic Particle Inspection (MPI): Detects microscopic flaws and stress fractures before they become problems
• Chrome-lined bore and chamber: Resists corrosion and heat erosion, extending barrel life and ensuring reliable feeding and extraction

Design Features

• Button rifling: Provides superior accuracy and consistency shot to shot
• M4 profile: Optimized for modern AR-15 platforms with proper weight distribution
• M4 feed ramps: Ensures smooth, reliable chambering of every round
• Carbine-length gas system: Balanced performance for 16" barrels
• Manganese phosphate finish: Matte black exterior resists corrosion and oxidation

This is a no-compromise barrel for shooters who demand accuracy, reliability, and durability in their AR-15 platform.