This complete upper includes the ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. The proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.

Features :

• M4E1 Threaded Assembled Upper Receiver
• "9" M-LOK ATLAS S-ONE Handguard"
• "10.5" 5.56 CMV Barrel,
• Low Profile Gas Block and Carbine Length Gas Tube
• Product comes assembled
• This complete upper does not include BCG or Charging Handle