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

Image of Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR600251M73

Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR600251M73

Image of Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Cerakote, FDE, APAR600252M73

Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Cerakote, FDE, APAR600252M73

Aero Precision M4E1 Complete Upper, 18in .223 Wylde Rifle Barrel

Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR600251M73

Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR600251M73

Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Cerakote, FDE, APAR600252M73

Aero Precision M4E1 Complete Upper, 18in .223 Wylde Rifle Barrel

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Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR600251M73

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Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Cerakote, FDE, APAR600252M73

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Aero Precision M4E1 Complete Upper, 18in .223 Wylde Rifle Barrel

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Aero Precision, M4E1, AR15, .223 Wylde, 18 inch, SS QPQ M-LOK Upper Receiver, Rifle Length, 1-8 Twist, 1/2x28, A2 Flash Hider, Anodized, Black, APAR600251M73

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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...
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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...
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32/39 found this helpful

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...

5/6 found this helpful

Most Recent Reviews

solid choice for a SPR by MacGroober, 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

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

2 Models Available

Color

All

Finish

All

Color:: Black
Finish:: Anodized

Code: 29D-UFH-M4CWRB-APAR600251M73

MPN: APAR600251M73

UPC: 815421029116

List: ~~$605.00~~Save 10%

$544.99

Color:: Flat Dark Earth
Finish:: Cerakote

Code: 29D-UFH-M4CWRB-APAR600252M73

MPN: APAR600252M73

UPC: 815421029123

List: ~~$640.00~~Save 10%

$574.99

Expert Advice Request for Quote Price Match

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

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.

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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.

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
Firearms Threads Per Inch:	1/2x28
Handguard Type:	Free-Float
Muzzle Device:	A2 Flash Hider
Gun Model:	AR-15
Fabric/Material:	7075-T6 Aluminum
Gas Block Journal Size-Diameter:	.750 in
Handguard Length:	15 in
Handguard Style:	M-LOK w/ Top Picatinny Rail System
Gun Rail:	M-LOK
Gun Type:	Rifle
Gun Make:	AR Platform
Barrel Material:	416R Stainless Steel
Weight:	68.5 oz
Magazine Included:	No
Condition:	New
Threads per Inch:	1/2x28
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

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