This complete upper includes Aero’s new ATLAS S-ONE Handguard. The S-ONE line of handguards is designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero’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.
- M4E1 Threaded Upper Receiver, No Forward Assist.
- 9.2″ 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.
- The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel.
M4E1 Threaded, No Forward Assist Upper Receiver Features:
- No Forward Assist
- New enhanced forging that gives the upper receiver a “billet look”
- New picatinny profile that blends seamlessly with our Enhanced Series Handguards
- M4 Feedramps
- Laser engraved T-marks
- Includes port door and forward assist installed
- .250 takedown pin holes.
ATLAS S-ONE Handguard Features:
- Front and rear Picatinny rail
- Eliminated center of top rail for weight reduction
- Indexing grooves in 12:00 position for positive grip control
- Quick disconnect sling socket at the 3, 6, and 9 o’clock positions
- Compatible with low profile gas blocks
- 1.3” Inside diameter
- 1.5” Outside diameter
- Compatible with mil-spec AR15 upper receivers and barrels
10.5″ 5.56 Barrel Features:
- 5.56 NATO 10.5″ Barrel, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled.
- .750 gas block journal.
- Carbine length gas system, .0785 gas port.
- M4 Feed Ramp Extension.
- HP and MPI tested.
- Standard A2 flash hider.
This complete upper receiver does not include BCG or Charging Handle.