FN AR-15 16" Mid-Length 5.56 NATO Barrel

FN AR-15 Premium Barrel System

FN's AR-15 barrels represent the gold standard in aftermarket rifle components. Built to military specifications and manufactured from U.S.-sourced Chrome Moly Vanadium steel per Mil-B-11595E, these barrels deliver the reliability and accuracy serious shooters demand.

Quality Assurance

Every barrel undergoes rigorous testing:

• High Pressure Testing (HPT) — Validates safe operation under maximum chamber pressures
• Magnetic Particle Inspection (MPI) — Detects microscopic flaws and stress points before they become problems
• Chrome-lined bore and chamber — Extends barrel life, resists heat erosion, and ensures reliable chambering and extraction

Specifications

• Caliber: 5.56 NATO
• Length: 16 inches
• Twist Rate: 1:7 (stabilizes modern 5.56 ammunition)
• Gas System: Mid-length (optimal dwell time for 16" barrels)
• Profile: M16 contour (proven, reliable design)
• Rifling: Button rifled for consistency
• Feed Ramps: M4 style for reliable feeding
• Finish: Matte black Manganese Phosphate (corrosion and oxidation resistant)

Why It Matters

The mid-length gas system strikes the ideal balance between reliability and controllability. The chrome-lined bore resists corrosion and extends service life—critical for shooters in harsh environments or those who demand years of dependable performance. FN's button rifling process ensures bore consistency shot after shot.

This is a no-compromise barrel for serious AR-15 builders and shooters.