Aero Precision 11.5" FDE M4E1-T Threaded 5.56 Complete AR15 Upper Receiver ATLAS R-ONE
This AR15 Complete Upper Receiver, paired with the ATLAS R-ONE handguard streamlines the M4E1 enhanced upper offers a dynamic appearance your next AR15 by offering the look of a billet receiver in the strength of a forged. The R-ONE line of handguards are designed with a monolithic full picatinny top rail. 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.
FDE M4E1 Threaded Assembled Upper Receiver
9" FDE M-LOK ATLAS R-ONE Handguard
11.5" 5.56 CMV Barrel, Carbine Length
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 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
.250 takedown pin holes
Laser engraved T-marks
Includes port door and forward assist installed
ATLAS R-ONE Handguard Features:
Front and rear picatinny rail
Monolithic continuous picatinny top rail
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
11.5" 5.56 Barrel Features:
5.56 Nato 11.5" 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
Shipping to FFL Dealer Required: No
Made In America: Yes
Caliber: 5.56 NATO
Barrel Length: 11.5"
Finish: Cerakoted FDE
Weight: 2 lbs 12.6 oz