AR15 M4E1 Threaded Upper ATLAS S-ONE Combo Set


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AR15 M4E1 Threaded Upper ATLAS S-ONE Combo Set

Each ATLAS S-ONE Comb0 Set Includes

  • M4E1 Threaded Assembled Upper Reciever
  • ATLAS S-ONE Handguard of choice
  • Handguard Mounting Hardware

ATLAS S-ONE Handguard

The Aero Precision AR15 M4E1 Threaded Upper ATLAS S-ONE Combo Set is the newest addition to the Aero Precision Handguard lineup. Machined from 6061-T6 Aluminum, the S-ONE line of handguards are designed with size and weight in mind, providing the perfect handguard for your lightweight build. 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. Available in KeyMod™ and M-LOK® profiles with 12” and 15” options (7” and 9” options coming soon).


  • Front and rear picatinny rail
  • Eliminated center of top rail for weight reduction
  • Indexing grooves in 12:00 position for positive grip control
  • Compatible with low profile gas blocks
  • 1.3” Inside diameter
  • 1.5” Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels

ATLAS R-ONE Handguard Combo Sets

AR15 M4E1 Threaded Upper Receiver,

The Aero Precision AR15 M4E1 Threaded Assembled Upper Receiver (AKA Gen 2) features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the M4E1 enhanced body profile but is threaded to accept a standard AR15 barrel nut. It is forged from 7075-T6 Aluminum, precision machined to work with all mil-spec AR15 parts and includes the port door and forward assist pre-installed. Get the billet look without paying the billet price!

M4E1 Threaded Upper Features:

  • New enhanced forging that gives the upper receiver a “billet look”
  • New picatinny profile that blends seamlessly with our Enhanced Series Handguards

Arm or Ally is proud to team up with Aero to bring you some of the finest AR15 components available at affordable prices. So, be sure to check out our full selection of AR Parts and large inventory of AR Barrels.

Product Information

Item# APPG700201
Manufacturer: Aero Precision
Platform: AR15 – Multi caliber
Finish: Anodized Black | FDE
MSRP: Starting at $238.48

[/vc_column_text][porto_block name=”product-arm-or-ally”][vc_separator][vc_column_text]Arm or Ally is a stocking dealer for all Faxon Firearms, Ballistic Advantage, Rosco Manufacturing, Aero Precision, Toolcraft, Elftmann Tactical, HIPERFIRE and more. See our growing inventory of AR Parts and Reloading Components.[/vc_column_text][/vc_column][/vc_row]

Weight 1 oz
Dimensions N/A



Black, FDE


12" M-LOK, 15" M-LOK, 9" M-LOK, 7" M-LOK

Part Type

Handguard, Upper Receiver Parts

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