M4E1 Threaded 12.5" 5.56 Carbine Length Complete Upper Receiver w/ ATLAS R-ONE
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This complete upper includes our 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. 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.
M4E1 Threaded Assembled Upper Receiver
12.7" M-LOK ATLAS R-ONE Handguard
12.5" 5.56 Government Profile CMV Barrel, Carbine Length
Low Profile Gas Block and Carbine Length Gas Tube
AR15 A2 Birdcage 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
.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
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
12.5" 5.56 CMV Carbine Length Barrel Features:
Twist: 1 in 7
Material: Chrome Moly Vanadium
Finish: QPQ corrosion resistant finish both inside and out
Gas Block: .750
Gas System Length: Carbine
M4 Barrel Extension
HP and MPI Tested