Aero Precision M4E1 Complete Upper

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

Aero Precision M4E1 Complete Upper Specs (2 Options):

• M4E1 Threaded Assembled Upper Receiver
• 15″ ATLAS S-ONE MLOK Handguard
• 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.

OR

• M4E1 Threaded Assembled Upper Receiver
• ATLAS R-ONE MLOK Handguard
• 16″ 5.56 CMV Barrel
• Low Profile Gas Block and Mid-Length Gas Tube
• Product comes assembled
• This complete upper does not include BCG or Charging Handle.

Aero Precision M4E1 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 Feedramps
• .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

ATLAS R-ONE Handguard Features:

• Full top picatinny rail for optional attachments
• 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

BARREL OPTIONS:

16″ .223 Wylde 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

OR

16″ 5.56 Mid-Length Barrel Features:

• 5.56 NATO 16″ Midlength, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled
• .750 gas block journal
• Mid-length gas system, .0785 gas port
• M4 Feed Ramp Extension
• HP and MPI tested
• Standard A2 flash hider

WHY WE LOVE IT:  

Aero Precision makes some of the best AR components on the market and this complete upper is no exception.  Precision machining combined with superb design, give this upper all the features you want at a great price.

Looking for something else?  Check out our other products.

PRODUCTS

Need a place to shoot?  Take a look at the NSSF website.

WHERE TO SHOOT