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M4E1 Threaded No FA Complete Upper, 10.5" 5.56 Carbine, 9.2" M-LOK ATLAS R-ONE

This complete upper receiver features the same tried-and-true construction and aesthetics as our M4E1 Threaded Upper Receivers, without provisions for a forward assist. The included ATLAS R-ONE Handguard is 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 Upper Receiver, No Forward Assist

9.2" ATLAS R-ONE Handguard

10.5" 5.56 CMV Barrel

Low Profile Gas Block and Carbine Length Gas Tube

Port Door Assembly

A2 Flash Hider

This complete upper receiver does not include BCG or Charging Handle.

M4E1 Threaded, No Forward Assist Upper Receiver Features:

No Forward Assist

Custom enhanced forging that gives the upper receiver a "billet look" while maintaining the structural integrity of a forged part.

Picatinny profile that blends seamlessly with our Enhanced and ATLAS Series Handguards

M4 Feedramps

.250 takedown pin holes

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

1.3" Inside diameter

1.5" Outside diameter

Compatible with mil-spec AR15 upper receivers and barrels

MLOK attachment points

10.5" 5.56 Barrel Features:

5.56 NATO 10.5" 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

M4E1 Threaded No FA Complete Upper, 10.5" 5.56 Carbine, 9.2" M-LOK ATLAS R-ONE

$454.99 Regular Price
$386.74Sale Price
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