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Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider Up to 17% Off w/ Free S&H — 9 models

Special offer available for this product. Click here to see!
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Cerakote, FDE, APAR640252M42
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EQ-15 HG Gen 2, Cerakote, FDE, APAR640252Q42
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, Black Anodized, APAR700705M73
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, Black Anodized, APAR700705M42
Aero Precision M4E1 Complete Upper, .223 Wylde, 18in, Rifle Length, 1/8, EM-15 Gen2, A2, Anodize Black, APAR600251M73
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Anodized, Black, APAR640251M42
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, FDE Cerakote, APAR700715M73
Aero Precision M4E1 Complete Upper, .223 Wylde, 18in, Rifle Length, 1/8, EM-15 Gen2, A2, FDE, APAR600252M73
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, Fluted Barrel, 1-8 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, Black Anodized, APAR700705M51
Aero Precision M4E1 Complete Upper, 18in .223 Wylde Rifle Barrel
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Cerakote, FDE, APAR640252M42
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EQ-15 HG Gen 2, Cerakote, FDE, APAR640252Q42
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, Black Anodized, APAR700705M73
Aero Precision M4E1 Complete Upper, .223 Wylde, 18in, Rifle Length, 1/8, EM-15 Gen2, A2, Anodize Black, APAR600251M73
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Anodized, Black, APAR640251M42
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, FDE Cerakote, APAR700715M73
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Cerakote, FDE, APAR640252M42
1 of 16 images
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Cerakote, FDE, APAR640252M42
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EQ-15 HG Gen 2, Cerakote, FDE, APAR640252Q42
2 of 16 images
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EQ-15 HG Gen 2, Cerakote, FDE, APAR640252Q42
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, Black Anodized, APAR700705M73
3 of 16 images
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, Black Anodized, APAR700705M73
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, Black Anodized, APAR700705M42
4 of 16 images
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, Black Anodized, APAR700705M42
Aero Precision M4E1 Complete Upper, .223 Wylde, 18in, Rifle Length, 1/8, EM-15 Gen2, A2, Anodize Black, APAR600251M73
5 of 16 images
Aero Precision M4E1 Complete Upper, .223 Wylde, 18in, Rifle Length, 1/8, EM-15 Gen2, A2, Anodize Black, APAR600251M73
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Anodized, Black, APAR640251M42
6 of 16 images
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Anodized, Black, APAR640251M42
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, FDE Cerakote, APAR700715M73
7 of 16 images
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, FDE Cerakote, APAR700715M73
Aero Precision M4E1 Complete Upper, .223 Wylde, 18in, Rifle Length, 1/8, EM-15 Gen2, A2, FDE, APAR600252M73
8 of 16 images
Aero Precision M4E1 Complete Upper, .223 Wylde, 18in, Rifle Length, 1/8, EM-15 Gen2, A2, FDE, APAR600252M73
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, Fluted Barrel, 1-8 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, Black Anodized, APAR700705M51
9 of 16 images
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, Fluted Barrel, 1-8 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, Black Anodized, APAR700705M51
Aero Precision M4E1 Complete Upper, 18in .223 Wylde Rifle Barrel
10 of 16 images
Aero Precision M4E1 Complete Upper, 18in .223 Wylde Rifle Barrel
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Cerakote, FDE, APAR640252M42
11 of 16 images
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Cerakote, FDE, APAR640252M42
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EQ-15 HG Gen 2, Cerakote, FDE, APAR640252Q42
12 of 16 images
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EQ-15 HG Gen 2, Cerakote, FDE, APAR640252Q42
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, Black Anodized, APAR700705M73
13 of 16 images
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, Black Anodized, APAR700705M73
Aero Precision M4E1 Complete Upper, .223 Wylde, 18in, Rifle Length, 1/8, EM-15 Gen2, A2, Anodize Black, APAR600251M73
14 of 16 images
Aero Precision M4E1 Complete Upper, .223 Wylde, 18in, Rifle Length, 1/8, EM-15 Gen2, A2, Anodize Black, APAR600251M73
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Anodized, Black, APAR640251M42
15 of 16 images
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Anodized, Black, APAR640251M42
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, FDE Cerakote, APAR700715M73
16 of 16 images
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, FDE Cerakote, APAR700715M73

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Questions & Answers
Does this come with the gas block installed? Expert Answer

Yes, the Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider will come fully assembled, with the gas block installed. However, you will need to purchase a BCG and charging handle to complete the upper.

by Ethan, Gear Expert, November 10, 2023
Does the upper come completely assembled? Expert Answer

The Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider comes assembled but does not include a BCG or charging handle.

by Hunter, Gear Expert, November 15, 2023
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review Very solid and accurate by Rob C, Verified Owner, October 18, 2022
I have used many different Aero Precision products in the past and the quality has always been great. Very well assembled upper with a heavy profile barrel that has and maintains great accuracy. This is not lightweight but was purchased for a bench r...
Read More...
2/2 found this helpful
Helpful Negative Review Will not properly function factory .223 ammo by JStahl, Verified Owner, May 23, 2021
Long story short I have tried numerous brands of ammo, different buffer systems and even sent it back to Aero for inspection when it would not function factory .223 ammo. Was told by Aero that my brand new Aero BCG was the issue with headspacing. Got...
Read More...
30/37 found this helpful
Most Recent Reviews solid choice for a SPR by Michael Morelli, Verified Owner, October 2, 2023
It shoots great groups for me with few different ammo types. The 1/8 twist barrel chambered in .223 Wylde is a good way to go if your not sure what bullet you’re going to be putting through it.
Most Recent Reviews Did not cycle. Visable fouling (gas leak) deposited on barrel, under the gas tube where it connects by Atom, Verified Owner, February 15, 2023
Did not cycle. Visible fouling (gas leak) deposited on barrel, under the gas tube where it connects to the barrel. I shot about 30 rounds and had around 50% failure to feed. I tried this upper on 2 different aero lowers and 2 aero BCGs before inspect...
Read More...
3/4 found this helpful
Most Recent Reviews Couple hundred round review by Jamieson, Verified Owner, February 19, 2023
Run mine with a rifle buffer. Out of the past 2-300 rounds, I had 3 failures to feed with 55 grain 223, which i would say is more due to the ammo then the gun itself. I can get about 1 moa with my bipod running 55 grain. Overall for mine I like it, o...
Read More...
Read All 5 Reviews
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made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider

The enhanced handguard on the Aero Precision M4E1 .223 Wylde Complete Upper Receiver is a one-piece free float design with built-in anti-rotation tabs. These upper receivers AR15 Upper Receivers take almost no time to build onto your AR15. You'll be at the range shooting in no time when you add the Aero Precision M4E1 .223 Wylde Complete Upper Receiver to your AR15.image

WARNING: California`s Proposition 65

Specifications for Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider:

Manufacturer: Aero Precision
Caliber: .223 Wylde
Barrel Length: 18 in
Barrel Profile: SPR
Gas System Length: Rifle Length
Barrel Twist Rate: 1-8
Threads per Inch: 1/2x28
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Gun Model: AR-15
Condition: New
Fabric/Material: 7075-T6 Aluminum
Gas Block Journal Size-Diameter: .750 in
Handguard Length: 15 in
Gun Rail: Picatinny
Gun Type: Rifle
Gun Make: AR Platform
Included Accessories: None
Barrel Material: 416R Stainless Steel
Weight: 68.5 oz
Magazine Included: No
Country of Origin: USA

Features of Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider:

  • M4 Feed Ramp Extension
  • Laser engraved T-marks (Anodized only)
  • Comes assembled, with port door and forward assist installed
  • Accepts standard AR15/M16 components
  • Handguard mounting platform is forged into the receiver
  • Works with Aero Precision handguards but also fits most BAR-system handguards
  • Built in anti-rotation tabs
  • Scalloped rails
  • Continuous top rail
  • 1.78" inside diameter fits most muzzle devices and 1.5" suppressors
  • Compatible with low profile gas blocks
  • HP and MPI tested

Package Contents:

  • Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider
  • Barrel Nut
  • Wrench
  • Gen 2 Enhanced Handguard

What firearm models does the manufacturer say Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider is compatible with?

The manufacturer suggests that Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider is compatible with AR-15, M4, M16

Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider Orderable Models

List of Orderable Models

Aero Precision M4E1 Complete Upper, .223 Wylde, 18in, Rifle Length, 1/8, EM-15 Gen2, A2, Anodize Black, APAR600251M73 , MPN: APAR600251M73 , UPC: 815421029116 , Code: 29D-UFH-M4CWRB-APAR600251M73
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, Fluted Barrel, 1-8 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, Black Anodized, APAR700705M51 , MPN: APAR700705M51 , UPC: 840014602834 , Code: 29D-UFH-M4CWRB-APAR700705M51
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Anodized, Black, APAR640251M42 , MPN: APAR640251M42 , UPC: 815421021462 , Code: 29D-UFH-M4CWRB-APAR640251M42
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, Black Anodized, APAR700705M42 , MPN: APAR700705M42 , UPC: 840014602209 , Code: 29D-UFH-M4CWRB-APAR700705M42
Aero Precision M4E1 Complete Upper, .223 Wylde, 18in, Rifle Length, 1/8, EM-15 Gen2, A2, FDE, APAR600252M73 , MPN: APAR600252M73 , UPC: 815421029123 , Code: 29D-UFH-M4CWRB-APAR600252M73
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EQ-15 HG Gen 2, Cerakote, FDE, APAR640252Q42 , MPN: APAR640252Q42 , UPC: 815421023619 , Code: 29D-UFH-M4CWRB-APAR640252Q42
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, FDE Cerakote, APAR700715M73 , MPN: APAR700715M73 , UPC: 840014613212 , Code: 29D-UFH-M4CWRB-APAR700715M73
Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18in, Wylde SS QPQ Rifle Length, 1-8 Twist, A2 Flash Hider, 15 in M-LOK ATLAS R-ONE Handguard, Black Anodized, APAR700705M73 , MPN: APAR700705M73 , UPC: 840014613205 , Code: 29D-UFH-M4CWRB-APAR700705M73
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Cerakote, FDE, APAR640252M42 , MPN: APAR640252M42 , UPC: 815421021479 , Code: 29D-UFH-M4CWRB-APAR640252M42

Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider Unavailable & Discontinued Models

List of Unorderable Models

Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EK-15 HG Gen 2, Anodized, Black, APAR640251P42 , MPN: APAR640251P42 , UPC: 815421020960 , Code: 29D-UFH-M4CWRB-APAR640251P42
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EK-15 HG Gen 2, Cerakote, FDE, APAR640252P42 , MPN: APAR640252P42 , UPC: 815421023534 , Code: 29D-UFH-M4CWRB-APAR640252P42
Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EQ-15 HG Gen 2, Anodized, Black, APAR640251Q42 , MPN: APAR640251Q42 , UPC: 815421023411 , Code: 29D-UFH-M4CWRB-APAR640251Q42
DEMO, Aero Precision M4E1 Complete Upper Receiver, 18in, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Anodized, Black, APAR640251M42 , MPN: APAR640251M42-DEMO , Code: 29D-UFH-M4CWRB-APAR640251M42-DEMO
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