Aero Precision M4E1 Threaded 16" .223 Wylde Complete Upper Receiver w/ ATLAS S-ONE Handguard

Aero Precision M4E1 Threaded 16″ .223 Wylde Complete Upper Receiver w/ ATLAS S-ONE Handguard

Fully Assembled

This complete upper includes our 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. Our 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
• 16″ .223 Wylde Mid-Length Stainless Steel Barrel
• Low Profile Gas Block and Mid-Length Gas Tube
• Product comes assembled
• This complete upper does not include BCG or Charging Handle. 

M4E1 Threaded Upper Receiver Features:

• New enhanced forging that gives the upper receiver a “billet look.”
• New Picatinny profile that blends seamlessly with our Enhanced Series Handguards
• M4 Feed ramps
• .250 takedown pin holes
• Laser engraved T-marks
• Includes port door and forward assist installed

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

16″ .223 Stainless Steel Mid-Length Barrel Features:

• .223 Wylde 16″ Mid-Length Barrel, 1/8 Twist
• 416R Stainless Steel
• Bead Blasted Finish
• .750 gas block journal
• Mid-length gas system
• M4 Feed Ramp Extension
• HP and MPI tested
• Standard A2 flash hider

Also available with the ATLAS R-ONE Handguards