Aero Precision M4E1 10.5″ 5.56 Complete Upper Receiver w/ ATLAS S-ONE Handguard

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.

Includes:

• 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.

Note:

This complete upper receiver does not include BCG or Charging Handle.