Aero Precision M4E1 Threaded Complete Upper 16" 5.56 Mid Pencil Length Barrel, ATLAS R-ONE 15" M-LOK HG - Anodized - $505.74

Description

This complete upper includes Aero Precision’s 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. Their 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.
Includes:

M4E1 Threaded Assembled Upper Receiver - Anodized Black
15" ATLAS R-ONE M-LOK Handguard with 16" 5.56 CMV Barrel OR
15" ATLAS R-ONE M-LOK Handguard 18" 5.56 Rifle Length CMV Barrel
Low Profile Gas Block and Mid Pencil, Mid-Length, or Rifle Length Gas Tube depending on configuration
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. Per the National Firearms Act, the muzzle brake MUST be pinned and welded to achieve the necessary 16"" as defined by the ATF for a rifle build.

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
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

16" 5.56 Mid-Length Barrel Features:

5.56 NATO 16" Mid-length, 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

18" 5.56 Rifle Length Barrel Features:

5.56 Nato 18" Rifle Length Barrel
4150 CrMoV w/ QPQ finish
1/7 twist
.750 gas block journal
Rifle length gas system
M4 Feed Ramp Extension
HP and MPI tested
Standard A2 flash hider
SKU: 13495
UPC: 840014602148
MPN: APAR700705M39