This complete upper includes Aero Precision's new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero Precision's 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.

Includes:

M4E1 Threaded Assembled Upper Receiver

ATLAS S-ONE Handguard of choice

11.5" 5.56 CMV Barrel, Carbine Length

Low Profile Gas Block and Carbine Length Gas Tube

Product comes assembled

This complete upper does not include BCG or Charging Handle. The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel.