FN 36423 AR-15 5.56x45mm NATO 18″ Rifle Length Gas System, Black Phosphate Cold Hammer Forged Chrome Lined

Caliber or Gauge: N/A Length: 18″ Model: AR-15 Twist: N/A Sights: N/A Bore Type: Chrome Lined Finish: Manganese Phosphate Type: N/A Chokes Included: N/A Barrel Type: Rifle Length Ammo Type: N/A Barrel Features: Chrome-Lined