Complete Colt Upper Receiver Assy!! The durability, reliability and excellent build quality of Colt uppers will provide years of service you can count on.
  • 5.56 NATO/.223
  • MLOK Free Float Handguard
  • 16.1" Barrel
  • A2 Birdcage Flash Hider
  • Colt Bolt Carrier Group
  • Colt Charging Handle