Aero Precision M4E1 Threaded Complete Upper w/ 18″ .223 Wylde and 16.6 ATLAS R-ONE


Out of stock

SKU APAR700706M76 Categories , Tags , , ,


This complete upper includes the new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. 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.


M4E1 Threaded Assembled Upper Receiver
16.6″ M-LOK ATLAS R-ONE Handguard of choice
18″ .223 Wylde Stainless Steel QPQ Barrel, Rifle Length
Low Profile Gas Block and Rifle Length Gas Tube
A2 Flash Hider
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 Feedramps
.250 takedown pin holes
Laser engraved T-marks
Includes port door and forward assist installed
ATLAS R-ONE Handguard Features:

Full top picatinny rail for optional attachments
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
Learn More about our NEW ATLAS Handguards
18″ .223 Wylde Stainless Steel QPQ Barrel, Rifle Length Features:

.223 Wylde 18″ Rifle Length Barrel, 1/8 Twist
QPQ Corrosion Resistant Finish
.750 gas block journal
Rifle length gas system
M4 Feed Ramp Extension
HP and MPI tested
Standard A2 flash hider

Additional information

FFL Required





223 Wylde

Barrel Length



Anodized Black


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

You May Also Like...