• FAST & FREE SHIPPING ON EVERY ORDER
  • WISH LIST
  • CONTACT US
  • FAST & FREE SHIPPING ON EVERY ORDER
Milspec Retail
Login / Register
0 Compare
0 items / $0.00
Menu
Milspec Retail
0 items / $0.00
Browse Categories
  • AR Parts

    • LOWER PARTS
      • Bolt Catches
      • Buffer Tubes
      • Endplates
      • Lower Parts Kits
      • Magazine Releases
      • Pistol Grips
      • Rifle Buffers
      • Rifle Triggers
      • Safety Selectors
      • Trigger Guards
      • Stocks and Braces
    • UPPER PARTS
      • Bolt Carrier Groups
      • Charging Handles
      • Compensators
      • Complete Uppers
      • Flash Hiders
      • Forward Assists
      • Gas Blocks
      • Gas Tubes
      • Muzzle Devices
      • Rails
      • Rifle Barrels
      • Upper Receivers
    NEWLY ADDED
    • HRF Concepts RCM Rifle Combat Magwell for Aero M4E1 Lower $50.00 – $55.00
    • BCM MK2 Recoil Mitigation System Mod 1 $116.95 – $123.95
    • Rosco Manufacturing 12.5" Sage Dynamics 5.56 K9 Barrel (1/7 Twist) $170.00 $153.00

  • AK Parts
  • Pistol Parts
    • Pistol Barrels
    • Pistol Compensators
    • Pistol Lights
    • Pistol Magwells
    • Pistol Sights
    • Pistol Slides
    • Pistol Triggers
    • Pistol Slide Stops & Releases
    • Pistol Magazine Base Plates
  • Shotgun Parts
    • Shotgun Forends
    • Shotgun Grips
    • Shotgun Optic Mounts
    • Shotgun Stocks
    • Shotgun Triggers
  • Firearm Accessories
    • CONTROL
      • Bipods
      • Hand and Finger Stops
      • Rail Covers
      • Vertical Grips
      • Angled Grips
    • OPTICS
      • Sights & Optics
      • Optic Mounts
      • Iron Sights
    • ILLUMINATION
      • Weapon Mounted Lights
      • Weapon Light Mounts
      • Pressure Switches
      • Switch Mounts
      • Pistol Lights
      • Handheld Lights
    • TOOLS
      • Multitools
      • Gunsmithing Tools
    NEWLY ADDED
    • Eotech Vudu 1-6x28 FFP SR3 5.56mm BDC Reticle $1,399.00 $1,299.00
    • Daniel Defense 30MM Scope Mount - Double Ring $165.00
    • Modlite Systems OKW - 18350 Handheld Light Package $309.00
  • Tactical Gear
    • Back Packs & Bags
    • Chest Rigs
    • Medical
    • Plate Carriers
    • Pouches
    • Slings
    • Training Tools
  • SHOP
    rifle-parts-vert-copy

    RIFLE PARTS

    pistol-parts-vert

    PISTOL PARTS

    gear-vert-1

    GEAR

    accessories-vert

    ACCESSORIES

  • BRANDS
  • NEW ARRIVALS
  • UPDATES
MIL/LE DISCOUNT
  • SUPPORT
    • Contact Us
    • Order Info
    • Track Order
    • Start a Return
    • Cancel Order
-5%
Click to enlarge
Home AR Parts Upper Parts Complete Uppers Aero Precision M4E1 16″ 5.56 Complete Upper Receiver w/ ATLAS S-ONE Handguard – No Forward Assist
Aero Precision

Aero Precision M4E1 16″ 5.56 Complete Upper Receiver w/ ATLAS S-ONE Handguard – No Forward Assist

$539.99 $514.99

This complete upper receiver features the same tried-and-true construction and aesthetics as Aero’s M4E1 Threaded Upper Receivers, without provisions for a forward assist. This complete upper receiver does not include BCG or Charging Handle. Includes:

  • M4E1 Threaded Upper Receiver.
  • No Forward Assist.
  • 15″ ATLAS S-ONE Handguard.
  • 16″ 5.56 CMV Barrel.
  • Low Profile Gas Block and Mid-Length Gas Tube.
  • Port Door Assembly.
  • A2 Flash Hider.

Only 1 left in stock

FREE Shipping in the USA  |   FREE 30 Day Returns

Compare
Add to wishlist
SKU: APAR712105M7 Categories: AR Parts, Complete Uppers, Upper Parts
Share:
  • Description
  • Additional information
  • Shipping & Delivery
Description

This complete upper receiver features the same tried-and-true construction and aesthetics as Aero’s M4E1 Threaded Upper Receivers, without provisions for a forward assist. The included ATLAS S-ONE Handguard is designed with size and weight in mind. Featuring a trimmed-down top rail to help minimize weight and overall profile. Aero’s 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 Upper Receiver, No Forward Assist.
  • 15″ ATLAS S-ONE Handguard.
  • 16″ 5.56 CMV Barrel.
  • Low Profile Gas Block and Mid-Length Gas Tube.
  • Port Door Assembly.
  • A2 Flash Hider.

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 Aero’s Enhanced and ATLAS Series Handguards.
  • M4 Feedramps.
  • .250 takedown pin holes.

ATLAS S-ONE Handguard Features:

  • Front and rear Picatinny rail.
  • Eliminated center of top rail for weight reduction.
  • Indexing grooves in 12:00 position for positive grip control.
  • 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.

16″ 5.56 Barrel Features:

  • 5.56 NATO 16″ Barrel, 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.

Note:

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

Additional information
Brand

Aero Precision

Color / Pattern

Black

Firearm Compatibility

AR-15 / M4 / M16

Caliber

5.56 NATO / .223 Remington

Size

16"

Shipping & Delivery

FREE, FAST SHIPPING

We offer fast, free shipping on every US order. Most orders less than $100 will ship via USPS. Orders exceeding $100 will ship 2 or 3 Day FedEx. You can upgrade any order to 2-Day or Overnight during checkout for an additional charge.

To get your order shipped out same day, checkout before 1:00 PM Pacific time (4:00 PM Eastern).

INTERNATIONAL

Milspec Retail offers worldwide shipping on hundreds of products. However, due to the nature of our business, many products are restricted from export. These items will not be sold to customers located outside of the USA.

Related products

Compare
Add to wishlist
Select options

Geissele Super Precision – MRO Series Optic Mounts

2 reviews
$110.00 – $135.00
-9%
Compare
Add to wishlist
Select options

Unity Tactical Hot Button – Rail Mount

17 reviews
$108.00 – $114.00
-5%
Compare
Add to wishlist
Add to cart

Seekins Precision ProComp 10X Rifle Stock for AR Platform

$195.00 $185.00
OUT OF STOCK
Compare
Add to wishlist
Select options

RailScales XOS-H Type 1 Rail Covers

$58.00
OUT OF STOCK
Railscales
Compare
Add to wishlist
Select options

RailScales High Temp Polymer HTP Scales for KeyMod

$30.00
-9%
Compare
Add to wishlist
Select options

Unity Tactical FAST Micro Mount

17 reviews
$199.00 $181.00
-10%
Compare
Add to wishlist
Select options

Reptilia CQG Grip for AR-15/SR-25, SIG MPX/MCX & FN SCAR

9 reviews
$17.96 – $19.95
OUT OF STOCK
Compare
Add to wishlist
Select options

Geissele Super Precision Scope Mount – 34mm – Standard Height

$325.00 – $350.00
Aero Precision
Arisaka Defense
Bravo Company USA (BCM)
Emissary Development
Esstac
Ferro Concepts
Geissele Automatics
HRF Concepts
Modlite Systems
Reptilia Corp
SCALARWORKS
Unity Tactical
milspec

The VIP lounge of gun parts and firearm accessories.

Contact us with any questions or inquiries:

Message Us
Phone: (323) 400-2858
Panorama City, CA 91402
SHOPPING
  • Products
  • Brands
  • New Arrivals
  • Sale Products
  • RFQ Bulk Purchasing
CUSTOMER SUPPORT
  • Order Info & Policies
  • Track Order
  • Start a Return
  • Cancel Order
  • Privacy Policy
  • Export Restrictions
COMPANY
  • Contact Us
  • Customer Reviews
  • About Our Company
  • MIL/LE Discount
  • Apply as Vendor
  • Careers
MILSPEC RETAIL COPYRIGHT 2022
visa mastercard amex discover
  • Menu
  • Categories
  • AR Parts
    • Blast Shields
    • Bolt Carrier Groups
    • Braces
    • Buffer Tubes
    • Charging Handles
    • Compensators
    • Complete Uppers
    • Endplates
    • Flash Hiders
    • Forward Assists
    • Gas Blocks
    • Gas Tubes
    • Lower Parts
    • Lower Parts Kits
    • Magazines
    • Mag Releases
    • Mag Extensions
    • Muzzle Devices
    • Muzzle Brakes
    • Pistol Grips
    • Pistol Grips
    • Rails
    • Rail Covers
    • Rail Sections
    • Rifle Barrels
    • Rifle Buffers
    • Rifle Stocks
    • Rifle Triggers
    • Safety Selectors
    • Stocks & Braces
    • Trigger Guards
    • Upper Parts
    • Upper Parts Kits
    • Upper Receivers
  • AK Parts
  • Pistol Parts
    • Base Plates
    • Compensators
    • Magwells
    • Pistol Barrels
    • Pistol Magazines
    • Pistol Sights
    • Pistol Slides
    • Pistol Triggers
  • Shotgun Parts
    • Shotgun Forends
    • Shotgun Grips
    • Shotgun Optic Mounts
    • Shotgun Stocks
  • Firearm Accessories
    • Bipods
    • Grips
    • Finger Stops
    • Hand Stops
    • Lights & Lasers
    • Magazines
    • Sights & Optics
    • Weapon Mounted Flashlights
    • Weapon Light Mounts
  • Tactical Gear
    • Bags & Packs
    • Chest Rigs
    • Medical
    • Plate Carriers
    • Pouches
    • Slings
    • Training Tools
  • MAIN SHOP
  • BRANDS
  • NEW ARRIVALS
  • SUPPORT
    • Contact Us
    • Order Info
    • Track Order
    • Start a Return
    • Cancel Order
  • MIL/LE DISCOUNT
  • Compare
  • Login / Register
Shopping cart
close

Sign in

close

Lost your password?
Or login with
Facebook
Google

No account yet?

Create an Account

FREE SHIPPING TRANSIT TIMES

2-3 DAYS

  • Order value is $100 or more.
  • Shipping address is in the USA.
  • Some large and heavy products excluded.
  • Delivery days do not include Saturday, Sunday, and legal/postal holidays.

3-5 DAYS

  • Order value is under $100 or contains large/heavy products.
  • Shipping address is in the USA.
  • Delivery days do not include Saturday, Sunday, and legal/postal holidays.